From d19af21d621d2eb1082235e3338b70dbb809dc89 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Fri, 6 Oct 2017 18:06:46 +0200
Subject: [PATCH 01/18] Initial version of autowire

---
 telegram/ext/callbackqueryhandler.py    | 15 ++++++++-
 telegram/ext/commandhandler.py          |  9 ++++++
 telegram/ext/handler.py                 | 42 +++++++++++++++++++------
 telegram/ext/inlinequeryhandler.py      |  9 ++++++
 telegram/ext/messagehandler.py          |  4 +++
 telegram/ext/precheckoutqueryhandler.py |  9 ++++++
 telegram/ext/regexhandler.py            |  9 ++++++
 telegram/ext/shippingqueryhandler.py    |  9 ++++++
 telegram/utils/inspection.py            | 12 +++++++
 9 files changed, 108 insertions(+), 10 deletions(-)
 create mode 100644 telegram/utils/inspection.py

diff --git a/telegram/ext/callbackqueryhandler.py b/telegram/ext/callbackqueryhandler.py
index 626b3875dcb..fcabf3d93a0 100644
--- a/telegram/ext/callbackqueryhandler.py
+++ b/telegram/ext/callbackqueryhandler.py
@@ -72,7 +72,18 @@ class CallbackQueryHandler(Handler):
         pass_groups (:obj:`bool`, optional): If the callback should be passed the result of
             ``re.match(pattern, data).groups()`` as a keyword argument called ``groups``.
             Default is ``False``
-        pass_groupdict (:obj:`bool`, optional): If the callback should be passed the result of
+        pass_groupdict (:obj:`bool`, import inspect
+
+try:
+    def inspect_arguments(func):
+        args, _, _, defaults = inspect.getargspec(func)
+        # Filter out positional arguments
+        kwargs = args[:-len(defaults)]
+        return kwargs
+except Warning:  # `getargspec()` is deprecated in Python3
+    def inspect_arguments(func):
+        _, varargs, _, _, _, _, _ = inspect.getfullargspec(func)
+        return varargsoptional): If the callback should be passed the result of
             ``re.match(pattern, data).groupdict()`` as a keyword argument called ``groupdict``.
             Default is ``False``
         pass_user_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called
@@ -84,6 +95,7 @@ class CallbackQueryHandler(Handler):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pattern=None,
@@ -93,6 +105,7 @@ def __init__(self,
                  pass_chat_data=False):
         super(CallbackQueryHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/commandhandler.py b/telegram/ext/commandhandler.py
index b33dc7959f4..5722577dacb 100644
--- a/telegram/ext/commandhandler.py
+++ b/telegram/ext/commandhandler.py
@@ -39,6 +39,8 @@ class CommandHandler(Handler):
             Filters.
         allow_edited (:obj:`bool`): Optional. Determines Whether the handler should also accept
             edited messages.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_args (:obj:`bool`): Optional. Determines whether the handler should be passed
             ``args``.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
@@ -68,6 +70,11 @@ class CommandHandler(Handler):
             operators (& for and, | for or, ~ for not).
         allow_edited (:obj:`bool`, optional): Determines whether the handler should also accept
             edited messages. Default is ``False``.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_args (:obj:`bool`, optional): Determines whether the handler should be passed the
             arguments passed to the command as a keyword argument called ``args``. It will contain
             a list of strings, which is the text following the command split on single or
@@ -92,6 +99,7 @@ def __init__(self,
                  callback,
                  filters=None,
                  allow_edited=False,
+                 autowire=False,
                  pass_args=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
@@ -99,6 +107,7 @@ def __init__(self,
                  pass_chat_data=False):
         super(CommandHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 99b89109def..21cc506506a 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -17,6 +17,9 @@
 # You should have received a copy of the GNU Lesser Public License
 # along with this program.  If not, see [http://www.gnu.org/licenses/].
 """This module contains the base class for handlers as used by the Dispatcher."""
+import warnings
+
+from telegram.utils.inspection import get_positional_arguments
 
 
 class Handler(object):
@@ -24,6 +27,8 @@ class Handler(object):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -43,6 +48,11 @@ class Handler(object):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -60,11 +70,15 @@ class Handler(object):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_user_data=False,
                  pass_chat_data=False):
         self.callback = callback
+        self.autowire = autowire
+        if self.autowire and any((pass_update_queue, pass_job_queue, pass_user_data, pass_chat_data)):
+            warnings.warn('If `autowire` is set to `True`, it is unnecessary to provide any `pass_*` flags.')
         self.pass_update_queue = pass_update_queue
         self.pass_job_queue = pass_job_queue
         self.pass_user_data = pass_user_data
@@ -108,18 +122,28 @@ def collect_optional_args(self, dispatcher, update=None):
         """
         optional_args = dict()
 
-        if self.pass_update_queue:
-            optional_args['update_queue'] = dispatcher.update_queue
-        if self.pass_job_queue:
-            optional_args['job_queue'] = dispatcher.job_queue
-        if self.pass_user_data or self.pass_chat_data:
-            chat = update.effective_chat
-            user = update.effective_user
-
+        if self.autowire:
+            callback_args = get_positional_arguments(self.callback)
+            if 'update_queue' in callback_args:
+                optional_args['update_queue'] = dispatcher.update_queue
+            if 'job_queue' in callback_args:
+                optional_args['job_queue'] = dispatcher.job_queue
+            if 'user_data' in callback_args:
+                user = update.effective_user
+                optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
+            if 'chat_data' in callback_args:
+                chat = update.effective_chat
+                optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
+        else:
+            if self.pass_update_queue:
+                optional_args['update_queue'] = dispatcher.update_queue
+            if self.pass_job_queue:
+                optional_args['job_queue'] = dispatcher.job_queue
             if self.pass_user_data:
+                user = update.effective_user
                 optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
-
             if self.pass_chat_data:
+                chat = update.effective_chat
                 optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
 
         return optional_args
diff --git a/telegram/ext/inlinequeryhandler.py b/telegram/ext/inlinequeryhandler.py
index 3e5ec7a0566..09759b6196f 100644
--- a/telegram/ext/inlinequeryhandler.py
+++ b/telegram/ext/inlinequeryhandler.py
@@ -33,6 +33,8 @@ class InlineQueryHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -58,6 +60,11 @@ class InlineQueryHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -83,6 +90,7 @@ class InlineQueryHandler(Handler):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pattern=None,
@@ -92,6 +100,7 @@ def __init__(self,
                  pass_chat_data=False):
         super(InlineQueryHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/messagehandler.py b/telegram/ext/messagehandler.py
index 11c10803ceb..6c95919f42d 100644
--- a/telegram/ext/messagehandler.py
+++ b/telegram/ext/messagehandler.py
@@ -31,6 +31,8 @@ class MessageHandler(Handler):
         filters (:obj:`Filter`): Only allow updates with these Filters. See
             :mod:`telegram.ext.filters` for a full list of all available filters.
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -92,6 +94,7 @@ def __init__(self,
                  filters,
                  callback,
                  allow_edited=False,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_user_data=False,
@@ -108,6 +111,7 @@ def __init__(self,
 
         super(MessageHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/precheckoutqueryhandler.py b/telegram/ext/precheckoutqueryhandler.py
index 5cccfdd54eb..c9f10b63b04 100644
--- a/telegram/ext/precheckoutqueryhandler.py
+++ b/telegram/ext/precheckoutqueryhandler.py
@@ -27,6 +27,8 @@ class PreCheckoutQueryHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -46,6 +48,11 @@ class PreCheckoutQueryHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -63,12 +70,14 @@ class PreCheckoutQueryHandler(Handler):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_user_data=False,
                  pass_chat_data=False):
         super(PreCheckoutQueryHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/regexhandler.py b/telegram/ext/regexhandler.py
index 9397ff3720e..b894679b6ff 100644
--- a/telegram/ext/regexhandler.py
+++ b/telegram/ext/regexhandler.py
@@ -38,6 +38,8 @@ class RegexHandler(Handler):
     Attributes:
         pattern (:obj:`str` | :obj:`Pattern`): The regex pattern.
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_groups (:obj:`bool`): Optional. Determines whether ``groups`` will be passed to the
             callback function.
         pass_groupdict (:obj:`bool`): Optional. Determines whether ``groupdict``. will be passed to
@@ -62,6 +64,11 @@ class RegexHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_groups (:obj:`bool`, optional): If the callback should be passed the result of
             ``re.match(pattern, data).groups()`` as a keyword argument called ``groups``.
             Default is ``False``
@@ -97,6 +104,7 @@ class RegexHandler(Handler):
     def __init__(self,
                  pattern,
                  callback,
+                 autowire=False,
                  pass_groups=False,
                  pass_groupdict=False,
                  pass_update_queue=False,
@@ -117,6 +125,7 @@ def __init__(self,
 
         super(RegexHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/ext/shippingqueryhandler.py b/telegram/ext/shippingqueryhandler.py
index ab21197d306..05b2a3d9373 100644
--- a/telegram/ext/shippingqueryhandler.py
+++ b/telegram/ext/shippingqueryhandler.py
@@ -27,6 +27,8 @@ class ShippingQueryHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -46,6 +48,11 @@ class ShippingQueryHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -63,12 +70,14 @@ class ShippingQueryHandler(Handler):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_user_data=False,
                  pass_chat_data=False):
         super(ShippingQueryHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
diff --git a/telegram/utils/inspection.py b/telegram/utils/inspection.py
new file mode 100644
index 00000000000..b413536b8be
--- /dev/null
+++ b/telegram/utils/inspection.py
@@ -0,0 +1,12 @@
+import inspect
+
+try:
+    def get_positional_arguments(func):
+        args, _, _, defaults = inspect.getargspec(func)
+        # Filter out positional arguments
+        kwargs = args[:-len(defaults)]
+        return kwargs
+except Warning:  # `getargspec()` is deprecated in Python3
+    def get_positional_arguments(func):
+        _, varargs, _, _, _, _, _ = inspect.getfullargspec(func)
+        return varargs

From bf15f54c95319786fbd9262bdbd4d046d2972595 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Fri, 6 Oct 2017 18:20:38 +0200
Subject: [PATCH 02/18] Changed order of keyword arguments in the hope that no
 user has treated pass_update_queue as a positional argument.

---
 telegram/ext/inlinequeryhandler.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/telegram/ext/inlinequeryhandler.py b/telegram/ext/inlinequeryhandler.py
index 09759b6196f..b08621a5a0e 100644
--- a/telegram/ext/inlinequeryhandler.py
+++ b/telegram/ext/inlinequeryhandler.py
@@ -91,9 +91,9 @@ class InlineQueryHandler(Handler):
     def __init__(self,
                  callback,
                  autowire=False,
+                 pattern=None,
                  pass_update_queue=False,
                  pass_job_queue=False,
-                 pattern=None,
                  pass_groups=False,
                  pass_groupdict=False,
                  pass_user_data=False,

From 1243680f6a68d74a9dac95f1a4fe79de692a7eaa Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Fri, 6 Oct 2017 21:47:09 +0200
Subject: [PATCH 03/18] Stable autowiring functionality

---
 telegram/ext/callbackqueryhandler.py      |   4 +
 telegram/ext/choseninlineresulthandler.py |  10 ++
 telegram/ext/commandhandler.py            |  13 ++-
 telegram/ext/handler.py                   | 126 +++++++++++++++++-----
 telegram/ext/inlinequeryhandler.py        |   3 +
 telegram/ext/messagehandler.py            |  11 +-
 telegram/ext/precheckoutqueryhandler.py   |   2 +
 telegram/ext/regexhandler.py              |   2 +
 telegram/ext/shippingqueryhandler.py      |   2 +
 telegram/ext/stringcommandhandler.py      |   3 +
 telegram/ext/stringregexhandler.py        |   8 +-
 telegram/ext/typehandler.py               |  14 ++-
 telegram/utils/inspection.py              |  14 ++-
 13 files changed, 169 insertions(+), 43 deletions(-)

diff --git a/telegram/ext/callbackqueryhandler.py b/telegram/ext/callbackqueryhandler.py
index fcabf3d93a0..ddbb0c5bcfc 100644
--- a/telegram/ext/callbackqueryhandler.py
+++ b/telegram/ext/callbackqueryhandler.py
@@ -118,6 +118,9 @@ def __init__(self,
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
 
+        if self.autowire:
+            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data'})
+
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
 
@@ -145,6 +148,7 @@ def handle_update(self, update, dispatcher):
 
         """
         optional_args = self.collect_optional_args(dispatcher, update)
+
         if self.pattern:
             match = re.match(self.pattern, update.callback_query.data)
 
diff --git a/telegram/ext/choseninlineresulthandler.py b/telegram/ext/choseninlineresulthandler.py
index 59d0ec0e640..c2262f41e10 100644
--- a/telegram/ext/choseninlineresulthandler.py
+++ b/telegram/ext/choseninlineresulthandler.py
@@ -28,6 +28,8 @@ class ChosenInlineResultHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -47,6 +49,10 @@ class ChosenInlineResultHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -64,16 +70,20 @@ class ChosenInlineResultHandler(Handler):
 
     def __init__(self,
                  callback,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_user_data=False,
                  pass_chat_data=False):
         super(ChosenInlineResultHandler, self).__init__(
             callback,
+            autowire=autowire,
             pass_update_queue=pass_update_queue,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
             pass_chat_data=pass_chat_data)
+        if self.autowire:
+            self.set_autowired_flags()
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/ext/commandhandler.py b/telegram/ext/commandhandler.py
index 5722577dacb..5dfa06aac2d 100644
--- a/telegram/ext/commandhandler.py
+++ b/telegram/ext/commandhandler.py
@@ -21,8 +21,8 @@
 
 from future.utils import string_types
 
-from .handler import Handler
 from telegram import Update
+from .handler import Handler
 
 
 class CommandHandler(Handler):
@@ -73,8 +73,7 @@ class CommandHandler(Handler):
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
             inspected for positional arguments and pass objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
-            ``autowire`` will yield
-            a warning.
+            ``autowire`` will yield a warning.
         pass_args (:obj:`bool`, optional): Determines whether the handler should be passed the
             arguments passed to the command as a keyword argument called ``args``. It will contain
             a list of strings, which is the text following the command split on single or
@@ -113,13 +112,16 @@ def __init__(self,
             pass_user_data=pass_user_data,
             pass_chat_data=pass_chat_data)
 
+        self.pass_args = pass_args
+        if self.autowire:
+            self.set_autowired_flags({'update_queue', 'job_queue', 'user_data', 'chat_data', 'args'})
+
         if isinstance(command, string_types):
             self.command = [command.lower()]
         else:
             self.command = [x.lower() for x in command]
         self.filters = filters
         self.allow_edited = allow_edited
-        self.pass_args = pass_args
 
         # We put this up here instead of with the rest of checking code
         # in check_update since we don't wanna spam a ton
@@ -139,7 +141,7 @@ def check_update(self, update):
 
         """
         if (isinstance(update, Update)
-                and (update.message or update.edited_message and self.allow_edited)):
+            and (update.message or update.edited_message and self.allow_edited)):
             message = update.message or update.edited_message
 
             if message.text:
@@ -170,6 +172,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        self.set_autowired_flags({'args', 'update_queue', 'job_queue', 'user_data', 'chat_data'})
         optional_args = self.collect_optional_args(dispatcher, update)
 
         message = update.message or update.edited_message
diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 21cc506506a..11551cfb417 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -19,7 +19,7 @@
 """This module contains the base class for handlers as used by the Dispatcher."""
 import warnings
 
-from telegram.utils.inspection import get_positional_arguments
+from telegram.utils.inspection import inspect_arguments
 
 
 class Handler(object):
@@ -77,12 +77,12 @@ def __init__(self,
                  pass_chat_data=False):
         self.callback = callback
         self.autowire = autowire
-        if self.autowire and any((pass_update_queue, pass_job_queue, pass_user_data, pass_chat_data)):
-            warnings.warn('If `autowire` is set to `True`, it is unnecessary to provide any `pass_*` flags.')
         self.pass_update_queue = pass_update_queue
         self.pass_job_queue = pass_job_queue
         self.pass_user_data = pass_user_data
         self.pass_chat_data = pass_chat_data
+        self._autowire_initialized = False
+        self._callback_args = None
 
     def check_update(self, update):
         """
@@ -113,8 +113,77 @@ def handle_update(self, update, dispatcher):
         """
         raise NotImplementedError
 
+    def __get_available_pass_flags(self):
+        """
+        Used to provide warnings if the user decides to use `autowire` in conjunction with
+        `pass_*` flags, and to recalculate all flags.
+
+        Getting objects dynamically is better than hard-coding all passable objects and setting
+        them to False in here, because the base class should not know about the existence of
+        passable objects that are only relevant to subclasses (e.g. args, groups, groupdict).
+        """
+        return [f for f in dir(self) if f.startswith('pass_')]
+
+    def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data', 'chat_data'}):
+        """
+
+        Make the passable arguments explicit as opposed to dynamically generated to be absolutely
+        safe that no arguments will be passed that are not allowed.
+        """
+
+        if not self.autowire:
+            raise ValueError("This handler is not autowired.")
+
+        if self._autowire_initialized:
+            # In case that users decide to change their callback signatures at runtime, give the
+            # possibility to recalculate all flags.
+            for flag in self.__get_available_pass_flags():
+                setattr(self, flag, False)
+
+        all_passable_objects = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
+
+        self._callback_args = inspect_arguments(self.callback)
+
+        def should_pass_obj(name):
+            """
+            Utility to determine whether a passable object is part of
+            the user handler's signature, makes sense in this context,
+            and is not explicitly set to `False`.
+            """
+            is_requested = name in all_passable_objects and name in self._callback_args
+            if is_requested and name not in passable:
+                warnings.warn("The argument `{}` cannot be autowired since it is not available "
+                              "on `{}s`.".format(name, type(self).__name__))
+                return False
+            return is_requested
+
+        # Check whether the user has set any `pass_*` flag to True in addition to `autowire`
+        for flag in self.__get_available_pass_flags():
+            to_pass = bool(getattr(self, flag))
+            if to_pass is True:
+                warnings.warn('If `autowire` is set to `True`, it is unnecessary '
+                              'to provide the `{}` flag.'.format(flag))
+
+        if should_pass_obj('update_queue'):
+            self.pass_update_queue = True
+        if should_pass_obj('job_queue'):
+            self.pass_job_queue = True
+        if should_pass_obj('user_data'):
+            self.pass_user_data = True
+        if should_pass_obj('chat_data'):
+            self.pass_chat_data = True
+        if should_pass_obj('args'):
+            self.pass_args = True
+        if should_pass_obj('groups'):
+            self.pass_groups = True
+        if should_pass_obj('groupdict'):
+            self.pass_groupdict = True
+
+        self._autowire_initialized = True
+
     def collect_optional_args(self, dispatcher, update=None):
-        """Prepares the optional arguments that are the same for all types of handlers.
+        """
+        Prepares the optional arguments that are the same for all types of handlers.
 
         Args:
             dispatcher (:class:`telegram.ext.Dispatcher`): The dispatcher.
@@ -123,27 +192,32 @@ def collect_optional_args(self, dispatcher, update=None):
         optional_args = dict()
 
         if self.autowire:
-            callback_args = get_positional_arguments(self.callback)
-            if 'update_queue' in callback_args:
-                optional_args['update_queue'] = dispatcher.update_queue
-            if 'job_queue' in callback_args:
-                optional_args['job_queue'] = dispatcher.job_queue
-            if 'user_data' in callback_args:
-                user = update.effective_user
-                optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
-            if 'chat_data' in callback_args:
-                chat = update.effective_chat
-                optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
-        else:
-            if self.pass_update_queue:
-                optional_args['update_queue'] = dispatcher.update_queue
-            if self.pass_job_queue:
-                optional_args['job_queue'] = dispatcher.job_queue
-            if self.pass_user_data:
-                user = update.effective_user
-                optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
-            if self.pass_chat_data:
-                chat = update.effective_chat
-                optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
+            # Subclasses are responsible for calling `set_autowired_flags` in their __init__
+            assert self._autowire_initialized
+
+        if self.pass_update_queue:
+            optional_args['update_queue'] = dispatcher.update_queue
+        if self.pass_job_queue:
+            optional_args['job_queue'] = dispatcher.job_queue
+        if self.pass_user_data:
+            user = update.effective_user
+            optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
+        if self.pass_chat_data:
+            chat = update.effective_chat
+            optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
 
         return optional_args
+
+    def collect_bot_update_args(self, dispatcher, update):
+        if self.autowire:
+            # Subclasses are responsible for calling `set_autowired_flags` in their __init__
+            assert self._autowire_initialized
+
+            positional_args = []
+            if 'bot' in self._callback_args:
+                positional_args.append(dispatcher.bot)
+            if 'update' in self._callback_args:
+                positional_args.append(update)
+            return positional_args
+        else:
+            return (dispatcher.bot, update)
diff --git a/telegram/ext/inlinequeryhandler.py b/telegram/ext/inlinequeryhandler.py
index b08621a5a0e..6f59646c111 100644
--- a/telegram/ext/inlinequeryhandler.py
+++ b/telegram/ext/inlinequeryhandler.py
@@ -112,6 +112,8 @@ def __init__(self,
         self.pattern = pattern
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
+        if self.autowire:
+            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data'})
 
     def check_update(self, update):
         """
@@ -142,6 +144,7 @@ def handle_update(self, update, dispatcher):
         """
 
         optional_args = self.collect_optional_args(dispatcher, update)
+
         if self.pattern:
             match = re.match(self.pattern, update.inline_query.query)
 
diff --git a/telegram/ext/messagehandler.py b/telegram/ext/messagehandler.py
index 6c95919f42d..69cdd604cf7 100644
--- a/telegram/ext/messagehandler.py
+++ b/telegram/ext/messagehandler.py
@@ -64,6 +64,11 @@ class MessageHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and pass objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield
+            a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -121,6 +126,9 @@ def __init__(self,
         self.channel_post_updates = channel_post_updates
         self.edited_updates = edited_updates
 
+        if self.autowire:
+            self.set_autowired_flags()
+
         # We put this up here instead of with the rest of checking code
         # in check_update since we don't wanna spam a ton
         if isinstance(self.filters, list):
@@ -168,6 +176,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/precheckoutqueryhandler.py b/telegram/ext/precheckoutqueryhandler.py
index c9f10b63b04..88e65cf6aad 100644
--- a/telegram/ext/precheckoutqueryhandler.py
+++ b/telegram/ext/precheckoutqueryhandler.py
@@ -82,6 +82,8 @@ def __init__(self,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
             pass_chat_data=pass_chat_data)
+        if self.autowire:
+            self.set_autowired_flags()
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/ext/regexhandler.py b/telegram/ext/regexhandler.py
index b894679b6ff..1a3a7329833 100644
--- a/telegram/ext/regexhandler.py
+++ b/telegram/ext/regexhandler.py
@@ -137,6 +137,8 @@ def __init__(self,
         self.pattern = pattern
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
+        if self.autowire:
+            self.set_autowired_flags({'groups', 'groupdict', 'update_queue', 'job_queue', 'user_data', 'chat_data'})
         self.allow_edited = allow_edited
         self.message_updates = message_updates
         self.channel_post_updates = channel_post_updates
diff --git a/telegram/ext/shippingqueryhandler.py b/telegram/ext/shippingqueryhandler.py
index 05b2a3d9373..b673ad628b8 100644
--- a/telegram/ext/shippingqueryhandler.py
+++ b/telegram/ext/shippingqueryhandler.py
@@ -82,6 +82,8 @@ def __init__(self,
             pass_job_queue=pass_job_queue,
             pass_user_data=pass_user_data,
             pass_chat_data=pass_chat_data)
+        if self.autowire:
+            self.set_autowired_flags()
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/ext/stringcommandhandler.py b/telegram/ext/stringcommandhandler.py
index ca77d1b4fd7..ee14e47cb0e 100644
--- a/telegram/ext/stringcommandhandler.py
+++ b/telegram/ext/stringcommandhandler.py
@@ -64,6 +64,7 @@ class StringCommandHandler(Handler):
     def __init__(self,
                  command,
                  callback,
+                 autowire=False,
                  pass_args=False,
                  pass_update_queue=False,
                  pass_job_queue=False):
@@ -71,6 +72,8 @@ def __init__(self,
             callback, pass_update_queue=pass_update_queue, pass_job_queue=pass_job_queue)
         self.command = command
         self.pass_args = pass_args
+        if self.autowire:
+            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data', 'args'})
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/ext/stringregexhandler.py b/telegram/ext/stringregexhandler.py
index 18e17bc1715..b9c8b10c2ae 100644
--- a/telegram/ext/stringregexhandler.py
+++ b/telegram/ext/stringregexhandler.py
@@ -72,12 +72,16 @@ class StringRegexHandler(Handler):
     def __init__(self,
                  pattern,
                  callback,
+                 autowire=False,
                  pass_groups=False,
                  pass_groupdict=False,
                  pass_update_queue=False,
                  pass_job_queue=False):
         super(StringRegexHandler, self).__init__(
-            callback, pass_update_queue=pass_update_queue, pass_job_queue=pass_job_queue)
+            callback,
+            autowire=autowire,
+            pass_update_queue=pass_update_queue,
+            pass_job_queue=pass_job_queue)
 
         if isinstance(pattern, string_types):
             pattern = re.compile(pattern)
@@ -85,6 +89,8 @@ def __init__(self,
         self.pattern = pattern
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
+        if self.autowire:
+            self.set_autowired_flags({'groups', 'groupdict', 'update_queue', 'job_queue'})
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/ext/typehandler.py b/telegram/ext/typehandler.py
index 5b4d1d33acb..ca6195fbc48 100644
--- a/telegram/ext/typehandler.py
+++ b/telegram/ext/typehandler.py
@@ -53,12 +53,22 @@ class TypeHandler(Handler):
 
     """
 
-    def __init__(self, type, callback, strict=False, pass_update_queue=False,
+    def __init__(self,
+                 type,
+                 callback,
+                 strict=False,
+                 autowire=False,
+                 pass_update_queue=False,
                  pass_job_queue=False):
         super(TypeHandler, self).__init__(
-            callback, pass_update_queue=pass_update_queue, pass_job_queue=pass_job_queue)
+            callback,
+            autowire=autowire,
+            pass_update_queue=pass_update_queue,
+            pass_job_queue=pass_job_queue)
         self.type = type
         self.strict = strict
+        if self.autowire:
+            self.set_autowired_flags({'update_queue', 'job_queue'})
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
diff --git a/telegram/utils/inspection.py b/telegram/utils/inspection.py
index b413536b8be..a6a6b7a845c 100644
--- a/telegram/utils/inspection.py
+++ b/telegram/utils/inspection.py
@@ -1,12 +1,10 @@
 import inspect
 
 try:
-    def get_positional_arguments(func):
-        args, _, _, defaults = inspect.getargspec(func)
-        # Filter out positional arguments
-        kwargs = args[:-len(defaults)]
-        return kwargs
+    def inspect_arguments(func):
+        args, _, _, _ = inspect.getargspec(func)
+        return args
 except Warning:  # `getargspec()` is deprecated in Python3
-    def get_positional_arguments(func):
-        _, varargs, _, _, _, _, _ = inspect.getfullargspec(func)
-        return varargs
+    def inspect_arguments(func):
+        args, varargs, varkw, defaults, kwonlyargs, kwonlydefaults, annotations = inspect.getfullargspec(func)
+        return args

From cafd9f88e36744c86b8ddf48f075757835d2d54c Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Fri, 6 Oct 2017 22:21:04 +0200
Subject: [PATCH 04/18] Added autowiring example

---
 examples/autowiring.py | 94 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 examples/autowiring.py

diff --git a/examples/autowiring.py b/examples/autowiring.py
new file mode 100644
index 00000000000..febd1678aaf
--- /dev/null
+++ b/examples/autowiring.py
@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Bot that displays the autowiring functionality
+# This program is dedicated to the public domain under the CC0 license.
+"""
+This bot shows how to use `autowire=True` in Handler definitions to save a lot of effort typing
+the explicit pass_* flags.
+
+Usage:
+Autowiring example: Try sending /start, "test", /data or something random.
+Press Ctrl-C on the command line or send a signal to the process to stop the
+bot.
+"""
+
+import logging
+
+from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
+
+# Enable logging
+logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+                    level=logging.INFO)
+
+logger = logging.getLogger(__name__)
+
+
+def error(bot, update, error):
+    logger.warning('Update "%s" caused error "%s"' % (update, error))
+
+
+def start(bot, update, args):
+    query = ' '.join(args)  # `args` is magically defined
+    if query:
+        update.message.reply_text(query)
+    else:
+        update.message.reply_text("Example: /start here I am")
+
+
+def simple_update_only(update):
+    """
+    A simple handler that only needs an `update` object.
+    Useful e.g. for /help commands that need to do nothing but reply with some text.
+    """
+    update.message.reply_text("This should have produced an error "
+                              "for the MessageHandler in group=1.")
+
+
+def callback_with_data(bot, update, chat_data, user_data):
+    msg = 'Adding something to chat_data...\n'
+    chat_data['value'] = "I'm a chat_data value"
+    msg += chat_data['value']
+
+    msg += '\n\n'
+
+    msg += 'Adding something to user_data...\n'
+    user_data['value'] = "I'm a user_data value"
+    msg += user_data['value']
+
+    update.message.reply_text(msg, quote=True)
+
+
+def main():
+    # Create the EventHandler and pass it your bot's token.
+    updater = Updater("TOKEN")
+
+    # Get the dispatcher to register handlers
+    dp = updater.dispatcher
+
+    # Inject the `args` parameter automagically
+    dp.add_handler(CommandHandler("start", start, autowire=True))
+
+    # This will raise an error because the bot argument is missing...
+    dp.add_handler(MessageHandler(Filters.text, simple_update_only), group=1)
+    # ... but with the autowiring capability, you can have callbacks with only an `update` argument.
+    dp.add_handler(MessageHandler(Filters.text, simple_update_only, autowire=True), group=2)
+
+    # Passing `chat_data` and `user_data` explicitly...
+    dp.add_handler(CommandHandler("data", callback_with_data,
+                                  pass_chat_data=True,
+                                  pass_user_data=True))
+    # ... is equivalent to passing them automagically.
+    dp.add_handler(CommandHandler("data", callback_with_data, autowire=True))
+
+    dp.add_error_handler(error)
+    updater.start_polling()
+
+    # Run the bot until you press Ctrl-C or the process receives SIGINT,
+    # SIGTERM or SIGABRT. This should be used most of the time, since
+    # start_polling() is non-blocking and will stop the bot gracefully.
+    updater.idle()
+
+
+if __name__ == '__main__':
+    main()

From 10e4aee791c2a7ddfa01937575d7d4a5803e48b6 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Fri, 6 Oct 2017 22:35:09 +0200
Subject: [PATCH 05/18] Extended autowiring example

---
 examples/autowiring.py | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/examples/autowiring.py b/examples/autowiring.py
index febd1678aaf..56a226894dd 100644
--- a/examples/autowiring.py
+++ b/examples/autowiring.py
@@ -8,14 +8,14 @@
 the explicit pass_* flags.
 
 Usage:
-Autowiring example: Try sending /start, "test", /data or something random.
+Autowiring example: Try sending /start, /data, "My name is Leandro", or some random text.
 Press Ctrl-C on the command line or send a signal to the process to stop the
 bot.
 """
 
 import logging
 
-from telegram.ext import Updater, CommandHandler, MessageHandler, Filters
+from telegram.ext import Updater, CommandHandler, RegexHandler
 
 # Enable logging
 logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
@@ -39,7 +39,7 @@ def start(bot, update, args):
 def simple_update_only(update):
     """
     A simple handler that only needs an `update` object.
-    Useful e.g. for /help commands that need to do nothing but reply with some text.
+    Useful e.g. for basic commands like /help that need to do nothing but reply with some text.
     """
     update.message.reply_text("This should have produced an error "
                               "for the MessageHandler in group=1.")
@@ -59,6 +59,11 @@ def callback_with_data(bot, update, chat_data, user_data):
     update.message.reply_text(msg, quote=True)
 
 
+def regex_with_groups(bot, update, groups, groupdict):
+    update.message.reply_text("Nice, your {} is {}.".format(groups[0], groups[1]))
+    update.message.reply_text('Groupdict: {}'.format(groupdict))
+
+
 def main():
     # Create the EventHandler and pass it your bot's token.
     updater = Updater("TOKEN")
@@ -69,10 +74,16 @@ def main():
     # Inject the `args` parameter automagically
     dp.add_handler(CommandHandler("start", start, autowire=True))
 
+    # A RegexHandler example where `groups` and `groupdict` are passed automagically
+    # Examples: Send "My name is Leandro" or "My cat is blue".
+    dp.add_handler(RegexHandler(r'[Mm]y (?P<object>.*) is (?P<value>.*)',
+                                regex_with_groups,
+                                autowire=True))
+
     # This will raise an error because the bot argument is missing...
-    dp.add_handler(MessageHandler(Filters.text, simple_update_only), group=1)
+    dp.add_handler(CommandHandler('help', simple_update_only), group=1)
     # ... but with the autowiring capability, you can have callbacks with only an `update` argument.
-    dp.add_handler(MessageHandler(Filters.text, simple_update_only, autowire=True), group=2)
+    dp.add_handler(CommandHandler('help', simple_update_only, autowire=True), group=2)
 
     # Passing `chat_data` and `user_data` explicitly...
     dp.add_handler(CommandHandler("data", callback_with_data,

From 44b922e05960dab21f5cd65edbfba842a15e6502 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 00:05:08 +0200
Subject: [PATCH 06/18] Added tests and more elaborate documentation for
 autowire

---
 telegram/ext/callbackqueryhandler.py      | 26 ++++++--------
 telegram/ext/choseninlineresulthandler.py |  5 +--
 telegram/ext/commandhandler.py            |  6 ++--
 telegram/ext/handler.py                   | 43 ++++++++++++++++++-----
 telegram/ext/inlinequeryhandler.py        | 21 +++++------
 telegram/ext/messagehandler.py            |  2 +-
 telegram/ext/precheckoutqueryhandler.py   |  6 ++--
 telegram/ext/regexhandler.py              |  5 +--
 telegram/ext/shippingqueryhandler.py      |  5 +--
 telegram/ext/stringcommandhandler.py      | 10 ++++--
 telegram/ext/stringregexhandler.py        |  3 +-
 telegram/ext/typehandler.py               |  9 ++++-
 tests/test_callbackqueryhandler.py        | 32 +++++++++++++++++
 tests/test_choseninlineresulthandler.py   | 11 ++++++
 tests/test_commandhandler.py              | 12 +++++++
 tests/test_inlinequeryhandler.py          | 30 ++++++++++++++++
 tests/test_messagehandler.py              | 11 ++++++
 tests/test_precheckoutqueryhandler.py     | 11 ++++++
 tests/test_regexhandler.py                | 28 +++++++++++++++
 tests/test_shippingqueryhandler.py        | 11 ++++++
 tests/test_stringcommandhandler.py        | 26 ++++++++++++++
 tests/test_stringregexhandler.py          | 27 ++++++++++++++
 tests/test_typehandler.py                 | 15 ++++++++
 23 files changed, 305 insertions(+), 50 deletions(-)

diff --git a/telegram/ext/callbackqueryhandler.py b/telegram/ext/callbackqueryhandler.py
index ddbb0c5bcfc..081611d4078 100644
--- a/telegram/ext/callbackqueryhandler.py
+++ b/telegram/ext/callbackqueryhandler.py
@@ -33,6 +33,8 @@ class CallbackQueryHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -58,6 +60,10 @@ class CallbackQueryHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and be passed objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -72,25 +78,13 @@ class CallbackQueryHandler(Handler):
         pass_groups (:obj:`bool`, optional): If the callback should be passed the result of
             ``re.match(pattern, data).groups()`` as a keyword argument called ``groups``.
             Default is ``False``
-        pass_groupdict (:obj:`bool`, import inspect
-
-try:
-    def inspect_arguments(func):
-        args, _, _, defaults = inspect.getargspec(func)
-        # Filter out positional arguments
-        kwargs = args[:-len(defaults)]
-        return kwargs
-except Warning:  # `getargspec()` is deprecated in Python3
-    def inspect_arguments(func):
-        _, varargs, _, _, _, _, _ = inspect.getfullargspec(func)
-        return varargsoptional): If the callback should be passed the result of
+        pass_groupdict (:obj:`bool`, optional): If the callback should be passed the result of
             ``re.match(pattern, data).groupdict()`` as a keyword argument called ``groupdict``.
             Default is ``False``
         pass_user_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``user_data`` will be passed to the callback function. Default is ``False``.
         pass_chat_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``chat_data`` will be passed to the callback function. Default is ``False``.
-
     """
 
     def __init__(self,
@@ -119,7 +113,8 @@ def __init__(self,
         self.pass_groupdict = pass_groupdict
 
         if self.autowire:
-            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data'})
+            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data',
+                                               'chat_data', 'update_queue', 'job_queue'})
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.
@@ -147,6 +142,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
 
         if self.pattern:
@@ -157,4 +153,4 @@ def handle_update(self, update, dispatcher):
             if self.pass_groupdict:
                 optional_args['groupdict'] = match.groupdict()
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/choseninlineresulthandler.py b/telegram/ext/choseninlineresulthandler.py
index c2262f41e10..1180ba78ed2 100644
--- a/telegram/ext/choseninlineresulthandler.py
+++ b/telegram/ext/choseninlineresulthandler.py
@@ -50,7 +50,7 @@ class ChosenInlineResultHandler(Handler):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
@@ -105,9 +105,10 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
 
     # old non-PEP8 Handler methods
     m = "telegram.ChosenInlineResultHandler."
diff --git a/telegram/ext/commandhandler.py b/telegram/ext/commandhandler.py
index 5dfa06aac2d..8e84b4bb059 100644
--- a/telegram/ext/commandhandler.py
+++ b/telegram/ext/commandhandler.py
@@ -71,7 +71,7 @@ class CommandHandler(Handler):
         allow_edited (:obj:`bool`, optional): Determines whether the handler should also accept
             edited messages. Default is ``False``.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield a warning.
         pass_args (:obj:`bool`, optional): Determines whether the handler should be passed the
@@ -172,7 +172,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
-        self.set_autowired_flags({'args', 'update_queue', 'job_queue', 'user_data', 'chat_data'})
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
 
         message = update.message or update.edited_message
@@ -180,4 +180,4 @@ def handle_update(self, update, dispatcher):
         if self.pass_args:
             optional_args['args'] = message.text.split()[1:]
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 11551cfb417..bb104473328 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -23,7 +23,12 @@
 
 
 class Handler(object):
-    """The base class for all update handlers. Create custom handlers by inheriting from it.
+    """
+    The base class for all update handlers. Create custom handlers by inheriting from it.
+
+    If your subclass needs the *autowiring* functionality, make sure to call ``set_autowired_flags``
+    **after** initializing the ``pass_*`` members. The ``passable`` argument to this method denotes
+    all the flags your Handler supports, e.g. ``{'update_queue', 'job_queue', 'args'}``.
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
@@ -49,10 +54,9 @@ class Handler(object):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
-            ``autowire`` will yield
-            a warning.
+            ``autowire`` will yield a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -116,7 +120,7 @@ def handle_update(self, update, dispatcher):
     def __get_available_pass_flags(self):
         """
         Used to provide warnings if the user decides to use `autowire` in conjunction with
-        `pass_*` flags, and to recalculate all flags.
+        ``pass_*`` flags, and to recalculate all flags.
 
         Getting objects dynamically is better than hard-coding all passable objects and setting
         them to False in here, because the base class should not know about the existence of
@@ -126,9 +130,15 @@ def __get_available_pass_flags(self):
 
     def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data', 'chat_data'}):
         """
+        This method inspects the callback handler for used arguments. If it finds arguments that
+        are ``passable``, i.e. types that can also be passed by the various ``pass_*`` flags,
+        it sets the according flags to true.
+
+        If the handler signature is prone to change at runtime for whatever reason, you can call
+        this method again to recalculate the flags to use.
 
-        Make the passable arguments explicit as opposed to dynamically generated to be absolutely
-        safe that no arguments will be passed that are not allowed.
+        The ``passable`` arguments are required to be explicit as opposed to dynamically generated
+        to be absolutely safe that no arguments will be passed that are not allowed.
         """
 
         if not self.autowire:
@@ -192,7 +202,8 @@ def collect_optional_args(self, dispatcher, update=None):
         optional_args = dict()
 
         if self.autowire:
-            # Subclasses are responsible for calling `set_autowired_flags` in their __init__
+            # Subclasses are responsible for calling `set_autowired_flags`
+            # at the end of their __init__
             assert self._autowire_initialized
 
         if self.pass_update_queue:
@@ -209,6 +220,20 @@ def collect_optional_args(self, dispatcher, update=None):
         return optional_args
 
     def collect_bot_update_args(self, dispatcher, update):
+        """
+        Prepares the positional arguments ``bot`` and/or ``update`` that are required for every
+        python-telegram-bot handler that is not **autowired**. If ``autowire`` is set to ``True``,
+        this method uses the inspected callback arguments to decide whether bot or update,
+        respectively, need to be passed. The order is always (bot, update).
+
+
+        Args:
+            dispatcher (:class:`telegram.ext.Dispatcher`): The dispatcher.
+            update (:class:`telegram.Update`): The update.
+
+        Returns:
+            A tuple of bot, update, or both
+        """
         if self.autowire:
             # Subclasses are responsible for calling `set_autowired_flags` in their __init__
             assert self._autowire_initialized
@@ -218,6 +243,6 @@ def collect_bot_update_args(self, dispatcher, update):
                 positional_args.append(dispatcher.bot)
             if 'update' in self._callback_args:
                 positional_args.append(update)
-            return positional_args
+            return tuple(positional_args)
         else:
             return (dispatcher.bot, update)
diff --git a/telegram/ext/inlinequeryhandler.py b/telegram/ext/inlinequeryhandler.py
index 6f59646c111..4aeb6bbd091 100644
--- a/telegram/ext/inlinequeryhandler.py
+++ b/telegram/ext/inlinequeryhandler.py
@@ -33,14 +33,14 @@ class InlineQueryHandler(Handler):
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
+        pattern (:obj:`str` | :obj:`Pattern`): Optional. Regex pattern to test
+            :attr:`telegram.InlineQuery.query` against.
         autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
             callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
             the callback function.
-        pattern (:obj:`str` | :obj:`Pattern`): Optional. Regex pattern to test
-            :attr:`telegram.InlineQuery.query` against.
         pass_groups (:obj:`bool`): Optional. Determines whether ``groups`` will be passed to the
             callback function.
         pass_groupdict (:obj:`bool`): Optional. Determines whether ``groupdict``. will be passed to
@@ -60,8 +60,11 @@ class InlineQueryHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
+        pattern (:obj:`str` | :obj:`Pattern`, optional): Regex pattern. If not ``None``,
+            ``re.match`` is used on :attr:`telegram.InlineQuery.query` to determine if an update
+            should be handled by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield
             a warning.
@@ -73,9 +76,6 @@ class InlineQueryHandler(Handler):
             ``job_queue`` will be passed to the callback function. It will be a
             :class:`telegram.ext.JobQueue` instance created by the :class:`telegram.ext.Updater`
             which can be used to schedule new jobs. Default is ``False``.
-        pattern (:obj:`str` | :obj:`Pattern`, optional): Regex pattern. If not ``None``,
-            ``re.match`` is used on :attr:`telegram.InlineQuery.query` to determine if an update
-            should be handled by this handler.
         pass_groups (:obj:`bool`, optional): If the callback should be passed the result of
             ``re.match(pattern, data).groups()`` as a keyword argument called ``groups``.
             Default is ``False``
@@ -90,8 +90,8 @@ class InlineQueryHandler(Handler):
 
     def __init__(self,
                  callback,
-                 autowire=False,
                  pattern=None,
+                 autowire=False,
                  pass_update_queue=False,
                  pass_job_queue=False,
                  pass_groups=False,
@@ -113,7 +113,8 @@ def __init__(self,
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
         if self.autowire:
-            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data'})
+            self.set_autowired_flags(passable={'update_queue', 'job_queue', 'user_data',
+                                               'chat_data', 'groups', 'groupdict'})
 
     def check_update(self, update):
         """
@@ -142,7 +143,7 @@ def handle_update(self, update, dispatcher):
             update (:class:`telegram.Update`): Incoming telegram update.
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
         """
-
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
 
         if self.pattern:
@@ -153,7 +154,7 @@ def handle_update(self, update, dispatcher):
             if self.pass_groupdict:
                 optional_args['groupdict'] = match.groupdict()
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
 
     # old non-PEP8 Handler methods
     m = "telegram.InlineQueryHandler."
diff --git a/telegram/ext/messagehandler.py b/telegram/ext/messagehandler.py
index 69cdd604cf7..9fd4da2699d 100644
--- a/telegram/ext/messagehandler.py
+++ b/telegram/ext/messagehandler.py
@@ -65,7 +65,7 @@ class MessageHandler(Handler):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield
             a warning.
diff --git a/telegram/ext/precheckoutqueryhandler.py b/telegram/ext/precheckoutqueryhandler.py
index 88e65cf6aad..20cc6f349e0 100644
--- a/telegram/ext/precheckoutqueryhandler.py
+++ b/telegram/ext/precheckoutqueryhandler.py
@@ -49,7 +49,7 @@ class PreCheckoutQueryHandler(Handler):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield
             a warning.
@@ -105,5 +105,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
-        return self.callback(dispatcher.bot, update, **optional_args)
+
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/regexhandler.py b/telegram/ext/regexhandler.py
index 1a3a7329833..616a97aff14 100644
--- a/telegram/ext/regexhandler.py
+++ b/telegram/ext/regexhandler.py
@@ -65,7 +65,7 @@ class RegexHandler(Handler):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield
             a warning.
@@ -173,6 +173,7 @@ def handle_update(self, update, dispatcher):
 
         """
 
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
         match = re.match(self.pattern, update.effective_message.text)
 
@@ -181,4 +182,4 @@ def handle_update(self, update, dispatcher):
         if self.pass_groupdict:
             optional_args['groupdict'] = match.groupdict()
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/shippingqueryhandler.py b/telegram/ext/shippingqueryhandler.py
index b673ad628b8..3b173dce295 100644
--- a/telegram/ext/shippingqueryhandler.py
+++ b/telegram/ext/shippingqueryhandler.py
@@ -49,7 +49,7 @@ class ShippingQueryHandler(Handler):
             It will be called when the :attr:`check_update` has determined that an update should be
             processed by this handler.
         autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
-            inspected for positional arguments and pass objects whose names match any of the
+            inspected for positional arguments and be passed objects whose names match any of the
             ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
             ``autowire`` will yield
             a warning.
@@ -105,5 +105,6 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher, update)
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/stringcommandhandler.py b/telegram/ext/stringcommandhandler.py
index ee14e47cb0e..de0be61bc31 100644
--- a/telegram/ext/stringcommandhandler.py
+++ b/telegram/ext/stringcommandhandler.py
@@ -33,6 +33,8 @@ class StringCommandHandler(Handler):
     Attributes:
         command (:obj:`str`): The command this handler should listen for.
         callback (:obj:`callable`): The callback function for this handler.
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_args (:obj:`bool`): Optional. Determines whether the handler should be passed
             ``args``.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
@@ -46,6 +48,10 @@ class StringCommandHandler(Handler):
         callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
             It will be called when the :attr:`check_update` has determined that a command should be
             processed by this handler.
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and be passed objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield a warning.
         pass_args (:obj:`bool`, optional): Determines whether the handler should be passed the
             arguments passed to the command as a keyword argument called ``args``. It will contain
             a list of strings, which is the text following the command split on single or
@@ -97,10 +103,10 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the command.
 
         """
-
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher)
 
         if self.pass_args:
             optional_args['args'] = update.split()[1:]
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/stringregexhandler.py b/telegram/ext/stringregexhandler.py
index b9c8b10c2ae..d666d755f7d 100644
--- a/telegram/ext/stringregexhandler.py
+++ b/telegram/ext/stringregexhandler.py
@@ -112,6 +112,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the command.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher)
         match = re.match(self.pattern, update)
 
@@ -120,4 +121,4 @@ def handle_update(self, update, dispatcher):
         if self.pass_groupdict:
             optional_args['groupdict'] = match.groupdict()
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/telegram/ext/typehandler.py b/telegram/ext/typehandler.py
index ca6195fbc48..051fd7c632f 100644
--- a/telegram/ext/typehandler.py
+++ b/telegram/ext/typehandler.py
@@ -29,6 +29,8 @@ class TypeHandler(Handler):
         callback (:obj:`callable`): The callback function for this handler.
         strict (:obj:`bool`): Optional. Use ``type`` instead of ``isinstance``.
             Default is ``False``
+        autowire (:obj:`bool`): Optional. Determines whether objects will be passed to the
+            callback function automatically.
         pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
             passed to the callback function.
         pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
@@ -42,6 +44,10 @@ class TypeHandler(Handler):
             processed by this handler.
         strict (:obj:`bool`, optional): Use ``type`` instead of ``isinstance``.
             Default is ``False``
+        autowire (:obj:`bool`, optional): If set to ``True``, your callback handler will be
+            inspected for positional arguments and be passed objects whose names match any of the
+            ``pass_*`` flags of this Handler. Using any ``pass_*`` argument in conjunction with
+            ``autowire`` will yield a warning.
         pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
             ``update_queue`` will be passed to the callback function. It will be the ``Queue``
             instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
@@ -94,6 +100,7 @@ def handle_update(self, update, dispatcher):
             dispatcher (:class:`telegram.ext.Dispatcher`): Dispatcher that originated the Update.
 
         """
+        positional_args = self.collect_bot_update_args(dispatcher, update)
         optional_args = self.collect_optional_args(dispatcher)
 
-        return self.callback(dispatcher.bot, update, **optional_args)
+        return self.callback(*positional_args, **optional_args)
diff --git a/tests/test_callbackqueryhandler.py b/tests/test_callbackqueryhandler.py
index 8160bcf9345..39d5b9637a5 100644
--- a/tests/test_callbackqueryhandler.py
+++ b/tests/test_callbackqueryhandler.py
@@ -74,6 +74,13 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def autowire_callback_1(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
+    def autowire_callback_2(self, bot, update, job_queue):
+        self.test_flag = all(x is not None for x in (bot, update, job_queue))
+
     def callback_group(self, bot, update, groups=None, groupdict=None):
         if groups is not None:
             self.test_flag = groups == ('t', ' data')
@@ -164,6 +171,31 @@ def test_pass_job_or_update_queue(self, dp, callback_query):
         dp.process_update(callback_query)
         assert self.test_flag
 
+    def test_autowire(self, dp, callback_query):
+        handler = CallbackQueryHandler(self.autowire_callback_1, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(callback_query)
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = CallbackQueryHandler(self.autowire_callback_2, autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update(callback_query)
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = CallbackQueryHandler(self.callback_group,
+                                       pattern='(?P<begin>.*)est(?P<end>.*)',
+                                       pass_groups=True)
+        dp.add_handler(handler)
+
+        dp.process_update(callback_query)
+        assert self.test_flag
+
+
     def test_other_update_types(self, false_update):
         handler = CallbackQueryHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_choseninlineresulthandler.py b/tests/test_choseninlineresulthandler.py
index 2606c536e7e..54f1d73e43c 100644
--- a/tests/test_choseninlineresulthandler.py
+++ b/tests/test_choseninlineresulthandler.py
@@ -78,6 +78,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def autowire_callback(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def test_basic(self, dp, chosen_inline_result):
         handler = ChosenInlineResultHandler(self.callback_basic)
         dp.add_handler(handler)
@@ -134,6 +138,13 @@ def test_pass_job_or_update_queue(self, dp, chosen_inline_result):
         dp.process_update(chosen_inline_result)
         assert self.test_flag
 
+    def test_autowire(self, dp, chosen_inline_result):
+        handler = ChosenInlineResultHandler(self.autowire_callback, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(chosen_inline_result)
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = ChosenInlineResultHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_commandhandler.py b/tests/test_commandhandler.py
index fb1aafa1fcf..a08f5e5ce27 100644
--- a/tests/test_commandhandler.py
+++ b/tests/test_commandhandler.py
@@ -75,6 +75,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def autowire_callback(self, update, args, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, args, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def ch_callback_args(self, bot, update, args):
         if update.message.text == '/test':
             self.test_flag = len(args) == 0
@@ -215,6 +219,14 @@ def test_pass_job_or_update_queue(self, dp, message):
         dp.process_update(Update(0, message=message))
         assert self.test_flag
 
+    def test_autowire(self, dp, message):
+        handler = CommandHandler('test', self.autowire_callback, autowire=True)
+        dp.add_handler(handler)
+
+        message.text = '/test abc'
+        dp.process_update(Update(0, message=message))
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = CommandHandler('test', self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_inlinequeryhandler.py b/tests/test_inlinequeryhandler.py
index 3a370845bcb..ae8d706343a 100644
--- a/tests/test_inlinequeryhandler.py
+++ b/tests/test_inlinequeryhandler.py
@@ -78,6 +78,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def callback_group(self, bot, update, groups=None, groupdict=None):
         if groups is not None:
             self.test_flag = groups == ('t', ' query')
@@ -168,6 +172,32 @@ def test_pass_job_or_update_queue(self, dp, inline_query):
         dp.process_update(inline_query)
         assert self.test_flag
 
+    def test_autowire(self, dp, inline_query):
+        handler = InlineQueryHandler(self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(inline_query)
+        assert self.test_flag
+
+    def test_autowire_group(self, dp, inline_query):
+        handler = InlineQueryHandler(self.callback_group,
+                                     pattern='(?P<begin>.*)est(?P<end>.*)',
+                                     autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(inline_query)
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = InlineQueryHandler(self.callback_group,
+                                     pattern='(?P<begin>.*)est(?P<end>.*)',
+                                     autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update(inline_query)
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = InlineQueryHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_messagehandler.py b/tests/test_messagehandler.py
index 114d03ed6ea..193d6ddec13 100644
--- a/tests/test_messagehandler.py
+++ b/tests/test_messagehandler.py
@@ -72,6 +72,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def test_basic(self, dp, message):
         handler = MessageHandler(None, self.callback_basic)
         dp.add_handler(handler)
@@ -179,6 +183,13 @@ def test_pass_job_or_update_queue(self, dp, message):
         dp.process_update(Update(0, message=message))
         assert self.test_flag
 
+    def test_autowire(self, dp, message):
+        handler = MessageHandler(None, self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(Update(0, message=message))
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = MessageHandler(None, self.callback_basic, edited_updates=True)
         assert not handler.check_update(false_update)
diff --git a/tests/test_precheckoutqueryhandler.py b/tests/test_precheckoutqueryhandler.py
index b6a9c3a60b8..135c437361c 100644
--- a/tests/test_precheckoutqueryhandler.py
+++ b/tests/test_precheckoutqueryhandler.py
@@ -77,6 +77,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def test_basic(self, dp, pre_checkout_query):
         handler = PreCheckoutQueryHandler(self.callback_basic)
         dp.add_handler(handler)
@@ -133,6 +137,13 @@ def test_pass_job_or_update_queue(self, dp, pre_checkout_query):
         dp.process_update(pre_checkout_query)
         assert self.test_flag
 
+    def test_autowire(self, dp, pre_checkout_query):
+        handler = PreCheckoutQueryHandler(self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(pre_checkout_query)
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = PreCheckoutQueryHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_regexhandler.py b/tests/test_regexhandler.py
index bd87bc705e4..9e018fbb1ad 100644
--- a/tests/test_regexhandler.py
+++ b/tests/test_regexhandler.py
@@ -72,6 +72,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def callback_group(self, bot, update, groups=None, groupdict=None):
         if groups is not None:
             self.test_flag = groups == ('t', ' message')
@@ -201,6 +205,30 @@ def test_pass_job_or_update_queue(self, dp, message):
         dp.process_update(Update(0, message=message))
         assert self.test_flag
 
+    def test_autowire(self, dp, message):
+        handler = RegexHandler('.*', self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(Update(0, message=message))
+        assert self.test_flag
+
+    def test_autowire_group_dict(self, dp, message):
+        handler = RegexHandler('(?P<begin>.*)est(?P<end>.*)', self.callback_group,
+                               autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(Update(0, message))
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = RegexHandler('(?P<begin>.*)est(?P<end>.*)', self.callback_group,
+                               autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update(Update(0, message))
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = RegexHandler('.*', self.callback_basic, edited_updates=True)
         assert not handler.check_update(false_update)
diff --git a/tests/test_shippingqueryhandler.py b/tests/test_shippingqueryhandler.py
index 47e6975b1be..43cd71a407a 100644
--- a/tests/test_shippingqueryhandler.py
+++ b/tests/test_shippingqueryhandler.py
@@ -78,6 +78,10 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue, chat_data, user_data):
+        self.test_flag = all(x is not None for x in (update, job_queue,
+                                                     update_queue, chat_data, user_data))
+
     def test_basic(self, dp, shiping_query):
         handler = ShippingQueryHandler(self.callback_basic)
         dp.add_handler(handler)
@@ -134,6 +138,13 @@ def test_pass_job_or_update_queue(self, dp, shiping_query):
         dp.process_update(shiping_query)
         assert self.test_flag
 
+    def test_autowire(self, dp, shiping_query):
+        handler = ShippingQueryHandler(self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update(shiping_query)
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = ShippingQueryHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_stringcommandhandler.py b/tests/test_stringcommandhandler.py
index 60fa786cb23..3e837577dd8 100644
--- a/tests/test_stringcommandhandler.py
+++ b/tests/test_stringcommandhandler.py
@@ -118,6 +118,32 @@ def test_pass_job_or_update_queue(self, dp):
         dp.process_update('/test')
         assert self.test_flag
 
+    def test_autowire(self, dp):
+        handler = StringCommandHandler('test', self.callback_queue_1, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update('/test')
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = StringCommandHandler('test', self.callback_queue_2, autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update('/test')
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = StringCommandHandler('test', self.sch_callback_args, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update('/test')
+        assert self.test_flag
+
+        self.test_flag = False
+        dp.process_update('/test one two')
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = StringCommandHandler('test', self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_stringregexhandler.py b/tests/test_stringregexhandler.py
index 9d0ed7829f8..45d7367ab2f 100644
--- a/tests/test_stringregexhandler.py
+++ b/tests/test_stringregexhandler.py
@@ -65,6 +65,9 @@ def callback_queue_1(self, bot, update, job_queue=None, update_queue=None):
     def callback_queue_2(self, bot, update, job_queue=None, update_queue=None):
         self.test_flag = (job_queue is not None) and (update_queue is not None)
 
+    def callback_autowire(self, update, job_queue, update_queue):
+        self.test_flag = all(x is not None for x in (update, job_queue, update_queue))
+
     def callback_group(self, bot, update, groups=None, groupdict=None):
         if groups is not None:
             self.test_flag = groups == ('t', ' message')
@@ -122,6 +125,30 @@ def test_pass_job_or_update_queue(self, dp):
         dp.process_update('test')
         assert self.test_flag
 
+    def test_autowire(self, dp):
+        handler = StringRegexHandler('test', self.callback_autowire, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update('test')
+        assert self.test_flag
+
+    def test_autowire_groups_and_groupdict(self, dp):
+        handler = StringRegexHandler('(?P<begin>.*)est(?P<end>.*)', self.callback_group,
+                                     autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update('test message')
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = StringRegexHandler('(?P<begin>.*)est(?P<end>.*)', self.callback_group,
+                                     autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update('test message')
+        assert self.test_flag
+
     def test_other_update_types(self, false_update):
         handler = StringRegexHandler('test', self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_typehandler.py b/tests/test_typehandler.py
index 43119123628..59b5edd0e5a 100644
--- a/tests/test_typehandler.py
+++ b/tests/test_typehandler.py
@@ -80,3 +80,18 @@ def test_pass_job_or_update_queue(self, dp):
         self.test_flag = False
         dp.process_update({'a': 1, 'b': 2})
         assert self.test_flag
+
+    def autowire_job_update(self, dp):
+        handler = TypeHandler(dict, self.callback_queue_1, autowire=True)
+        dp.add_handler(handler)
+
+        dp.process_update({'a': 1, 'b': 2})
+        assert self.test_flag
+
+        dp.remove_handler(handler)
+        handler = TypeHandler(dict, self.callback_queue_2, autowire=True)
+        dp.add_handler(handler)
+
+        self.test_flag = False
+        dp.process_update({'a': 1, 'b': 2})
+        assert self.test_flag

From 9c6efb8b6ba2b0d9c0da5ca59c48714e805d5cdc Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 00:13:46 +0200
Subject: [PATCH 07/18] Fixed StringCommandHandler pass-flags

---
 telegram/ext/stringcommandhandler.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/telegram/ext/stringcommandhandler.py b/telegram/ext/stringcommandhandler.py
index de0be61bc31..672faa1f65e 100644
--- a/telegram/ext/stringcommandhandler.py
+++ b/telegram/ext/stringcommandhandler.py
@@ -79,7 +79,7 @@ def __init__(self,
         self.command = command
         self.pass_args = pass_args
         if self.autowire:
-            self.set_autowired_flags(passable={'groups', 'groupdict', 'user_data', 'chat_data', 'args'})
+            self.set_autowired_flags(passable={'update_queue', 'job_queue', 'args'})
 
     def check_update(self, update):
         """Determines whether an update should be passed to this handlers :attr:`callback`.

From 6f02143451e3a38a3533a5be4c0f9f7ba81d44e4 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 00:41:47 +0200
Subject: [PATCH 08/18] Comment changed

---
 examples/autowiring.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/autowiring.py b/examples/autowiring.py
index 56a226894dd..ed4151dfecc 100644
--- a/examples/autowiring.py
+++ b/examples/autowiring.py
@@ -65,7 +65,7 @@ def regex_with_groups(bot, update, groups, groupdict):
 
 
 def main():
-    # Create the EventHandler and pass it your bot's token.
+    # Create the Updater and pass it your bot's token.
     updater = Updater("TOKEN")
 
     # Get the dispatcher to register handlers

From 284e6068f62f87e4c69338d41007c2496d17dbfc Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 00:42:03 +0200
Subject: [PATCH 09/18] Fixing tests that only fail on Travis

---
 telegram/ext/stringcommandhandler.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/telegram/ext/stringcommandhandler.py b/telegram/ext/stringcommandhandler.py
index 672faa1f65e..22633b9f701 100644
--- a/telegram/ext/stringcommandhandler.py
+++ b/telegram/ext/stringcommandhandler.py
@@ -75,7 +75,10 @@ def __init__(self,
                  pass_update_queue=False,
                  pass_job_queue=False):
         super(StringCommandHandler, self).__init__(
-            callback, pass_update_queue=pass_update_queue, pass_job_queue=pass_job_queue)
+            callback,
+            autowire=autowire,
+            pass_update_queue=pass_update_queue,
+            pass_job_queue=pass_job_queue)
         self.command = command
         self.pass_args = pass_args
         if self.autowire:

From cd4aded091a127d37a5ad91e190559445e0cf00b Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 00:47:25 +0200
Subject: [PATCH 10/18] Reduced method complexity

---
 telegram/ext/handler.py | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index bb104473328..0b7e521ad0d 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -117,6 +117,14 @@ def handle_update(self, update, dispatcher):
         """
         raise NotImplementedError
 
+    def __warn_autowire(self):
+        """ Warn if the user has set any `pass_*` flags to True in addition to `autowire` """
+        for flag in self.__get_available_pass_flags():
+            to_pass = bool(getattr(self, flag))
+            if to_pass is True:
+                warnings.warn('If `autowire` is set to `True`, it is unnecessary '
+                              'to provide the `{}` flag.'.format(flag))
+
     def __get_available_pass_flags(self):
         """
         Used to provide warnings if the user decides to use `autowire` in conjunction with
@@ -143,6 +151,7 @@ def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data'
 
         if not self.autowire:
             raise ValueError("This handler is not autowired.")
+        self.__warn_autowire()
 
         if self._autowire_initialized:
             # In case that users decide to change their callback signatures at runtime, give the
@@ -167,13 +176,6 @@ def should_pass_obj(name):
                 return False
             return is_requested
 
-        # Check whether the user has set any `pass_*` flag to True in addition to `autowire`
-        for flag in self.__get_available_pass_flags():
-            to_pass = bool(getattr(self, flag))
-            if to_pass is True:
-                warnings.warn('If `autowire` is set to `True`, it is unnecessary '
-                              'to provide the `{}` flag.'.format(flag))
-
         if should_pass_obj('update_queue'):
             self.pass_update_queue = True
         if should_pass_obj('job_queue'):

From 05c16a19a52a09aeb78c29e9c0300da53151a92d Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 01:02:39 +0200
Subject: [PATCH 11/18] Fixed small test problems

---
 tests/test_stringcommandhandler.py | 7 -------
 tests/test_typehandler.py          | 8 --------
 2 files changed, 15 deletions(-)

diff --git a/tests/test_stringcommandhandler.py b/tests/test_stringcommandhandler.py
index 3e837577dd8..d36d065ca34 100644
--- a/tests/test_stringcommandhandler.py
+++ b/tests/test_stringcommandhandler.py
@@ -119,13 +119,6 @@ def test_pass_job_or_update_queue(self, dp):
         assert self.test_flag
 
     def test_autowire(self, dp):
-        handler = StringCommandHandler('test', self.callback_queue_1, autowire=True)
-        dp.add_handler(handler)
-
-        dp.process_update('/test')
-        assert self.test_flag
-
-        dp.remove_handler(handler)
         handler = StringCommandHandler('test', self.callback_queue_2, autowire=True)
         dp.add_handler(handler)
 
diff --git a/tests/test_typehandler.py b/tests/test_typehandler.py
index 59b5edd0e5a..4f34ea84dcd 100644
--- a/tests/test_typehandler.py
+++ b/tests/test_typehandler.py
@@ -82,16 +82,8 @@ def test_pass_job_or_update_queue(self, dp):
         assert self.test_flag
 
     def autowire_job_update(self, dp):
-        handler = TypeHandler(dict, self.callback_queue_1, autowire=True)
-        dp.add_handler(handler)
-
-        dp.process_update({'a': 1, 'b': 2})
-        assert self.test_flag
-
-        dp.remove_handler(handler)
         handler = TypeHandler(dict, self.callback_queue_2, autowire=True)
         dp.add_handler(handler)
 
-        self.test_flag = False
         dp.process_update({'a': 1, 'b': 2})
         assert self.test_flag

From b388d1a8f1eaa28a6b538f916141dcfe38b7b3a4 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 01:46:14 +0200
Subject: [PATCH 12/18] Implemented test for base class `Handler` and fixed
 order of instructions in handler.py

---
 telegram/ext/handler.py |  52 +++++++++--------
 tests/test_handler.py   | 122 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 149 insertions(+), 25 deletions(-)
 create mode 100644 tests/test_handler.py

diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 0b7e521ad0d..7467b5ee912 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -87,6 +87,7 @@ def __init__(self,
         self.pass_chat_data = pass_chat_data
         self._autowire_initialized = False
         self._callback_args = None
+        self._passable = None
 
     def check_update(self, update):
         """
@@ -119,13 +120,13 @@ def handle_update(self, update, dispatcher):
 
     def __warn_autowire(self):
         """ Warn if the user has set any `pass_*` flags to True in addition to `autowire` """
-        for flag in self.__get_available_pass_flags():
+        for flag in self._get_available_pass_flags():
             to_pass = bool(getattr(self, flag))
             if to_pass is True:
                 warnings.warn('If `autowire` is set to `True`, it is unnecessary '
                               'to provide the `{}` flag.'.format(flag))
 
-    def __get_available_pass_flags(self):
+    def _get_available_pass_flags(self):
         """
         Used to provide warnings if the user decides to use `autowire` in conjunction with
         ``pass_*`` flags, and to recalculate all flags.
@@ -136,6 +137,20 @@ def __get_available_pass_flags(self):
         """
         return [f for f in dir(self) if f.startswith('pass_')]
 
+    def __should_pass_obj(self, name):
+        """
+        Utility to determine whether a passable object is part of
+        the user handler's signature, makes sense in this context,
+        and is not explicitly set to `False`.
+        """
+        all_passable_objects = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
+        is_requested = name in all_passable_objects and name in self._callback_args
+        if is_requested and name not in self._passable:
+            warnings.warn("The argument `{}` cannot be autowired since it is not available "
+                          "on `{}s`.".format(name, type(self).__name__))
+            return False
+        return is_requested
+
     def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data', 'chat_data'}):
         """
         This method inspects the callback handler for used arguments. If it finds arguments that
@@ -148,47 +163,34 @@ def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data'
         The ``passable`` arguments are required to be explicit as opposed to dynamically generated
         to be absolutely safe that no arguments will be passed that are not allowed.
         """
+        self._passable = passable
 
         if not self.autowire:
             raise ValueError("This handler is not autowired.")
-        self.__warn_autowire()
 
         if self._autowire_initialized:
             # In case that users decide to change their callback signatures at runtime, give the
             # possibility to recalculate all flags.
-            for flag in self.__get_available_pass_flags():
+            for flag in self._get_available_pass_flags():
                 setattr(self, flag, False)
 
-        all_passable_objects = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
+        self.__warn_autowire()
 
         self._callback_args = inspect_arguments(self.callback)
 
-        def should_pass_obj(name):
-            """
-            Utility to determine whether a passable object is part of
-            the user handler's signature, makes sense in this context,
-            and is not explicitly set to `False`.
-            """
-            is_requested = name in all_passable_objects and name in self._callback_args
-            if is_requested and name not in passable:
-                warnings.warn("The argument `{}` cannot be autowired since it is not available "
-                              "on `{}s`.".format(name, type(self).__name__))
-                return False
-            return is_requested
-
-        if should_pass_obj('update_queue'):
+        if self.__should_pass_obj('update_queue'):
             self.pass_update_queue = True
-        if should_pass_obj('job_queue'):
+        if self.__should_pass_obj('job_queue'):
             self.pass_job_queue = True
-        if should_pass_obj('user_data'):
+        if self.__should_pass_obj('user_data'):
             self.pass_user_data = True
-        if should_pass_obj('chat_data'):
+        if self.__should_pass_obj('chat_data'):
             self.pass_chat_data = True
-        if should_pass_obj('args'):
+        if self.__should_pass_obj('args'):
             self.pass_args = True
-        if should_pass_obj('groups'):
+        if self.__should_pass_obj('groups'):
             self.pass_groups = True
-        if should_pass_obj('groupdict'):
+        if self.__should_pass_obj('groupdict'):
             self.pass_groupdict = True
 
         self._autowire_initialized = True
diff --git a/tests/test_handler.py b/tests/test_handler.py
new file mode 100644
index 00000000000..342d11accd3
--- /dev/null
+++ b/tests/test_handler.py
@@ -0,0 +1,122 @@
+#!/usr/bin/env python
+#
+# A library that provides a Python interface to the Telegram Bot API
+# Copyright (C) 2015-2017
+# Leandro Toledo de Souza <devs@python-telegram-bot.org>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser Public License for more details.
+#
+# You should have received a copy of the GNU Lesser Public License
+# along with this program.  If not, see [http://www.gnu.org/licenses/].
+
+import pytest
+
+from telegram.ext import Handler
+
+
+class TestHandler(object):
+    test_flag = False
+
+    @pytest.fixture(autouse=True)
+    def reset(self):
+        self.test_flag = False
+
+    def callback_basic(self, bot, update):
+        pass
+
+    def callback_some_passable(self, bot, update, update_queue, chat_data):
+        pass
+
+    def callback_all_passable(self, bot, update, update_queue, job_queue, chat_data, user_data):
+        pass
+
+    def test_set_autowired_flags_all(self):
+        handler = Handler(self.callback_all_passable, autowire=True)
+        assert handler._autowire_initialized is False
+        assert handler.pass_update_queue is False
+        assert handler.pass_job_queue is False
+        assert handler.pass_chat_data is False
+        assert handler.pass_user_data is False
+
+        handler.set_autowired_flags()
+
+        assert handler._autowire_initialized is True
+        assert handler.pass_update_queue is True
+        assert handler.pass_job_queue is True
+        assert handler.pass_chat_data is True
+        assert handler.pass_user_data is True
+
+    def test_set_autowired_flags_some(self):
+        handler = Handler(self.callback_some_passable, autowire=True)
+        assert handler.pass_update_queue is False
+        assert handler.pass_chat_data is False
+
+        handler.set_autowired_flags()
+
+        assert handler._autowire_initialized is True
+        assert handler.pass_update_queue is True
+        assert handler.pass_chat_data is True
+
+    def test_set_autowired_flags_wrong(self):
+        handler = Handler(self.callback_all_passable, autowire=True)
+        with pytest.raises(UserWarning):
+            handler.set_autowired_flags({'kektus'})
+        with pytest.raises(UserWarning):
+            handler.set_autowired_flags({'chat_data', 'kektus'})
+        with pytest.raises(UserWarning):
+            handler.set_autowired_flags({'bot', 'update'})
+
+    def test_autowire_and_pass(self):
+        handler = Handler(self.callback_all_passable, autowire=True, pass_chat_data=True)
+        with pytest.raises(UserWarning):
+            handler.set_autowired_flags()
+
+    def test_not_autowired_set_flags(self):
+        handler = Handler(self.callback_all_passable, autowire=False)
+        with pytest.raises(ValueError):
+            handler.set_autowired_flags()
+
+    def test_autowire_reinitialize(self):
+        handler = Handler(self.callback_all_passable, autowire=True)
+        assert handler._autowire_initialized is False
+        assert handler.pass_update_queue is False
+        assert handler.pass_job_queue is False
+        assert handler.pass_chat_data is False
+        assert handler.pass_user_data is False
+
+        handler.set_autowired_flags()
+
+        assert handler._autowire_initialized is True
+        assert handler.pass_update_queue is True
+        assert handler.pass_job_queue is True
+        assert handler.pass_chat_data is True
+        assert handler.pass_user_data is True
+
+        handler.callback = self.callback_some_passable
+        handler.set_autowired_flags()
+
+        assert handler._autowire_initialized is True
+        assert handler.pass_update_queue is True
+        assert handler.pass_job_queue is False
+        assert handler.pass_chat_data is True
+        assert handler.pass_user_data is False
+
+    def test_get_available_pass_flags(self):
+        handler = Handler(self.callback_all_passable, autowire=True)
+        assert handler.pass_update_queue is False
+        assert handler.pass_job_queue is False
+        assert handler.pass_chat_data is False
+        assert handler.pass_user_data is False
+
+        handler.set_autowired_flags()
+
+        assert set(handler._get_available_pass_flags()) == {'pass_update_queue', 'pass_job_queue', 'pass_chat_data',
+                                                            'pass_user_data'}

From 5da1bb1ca88fb108e35346b39bcae80df2e74555 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 02:15:24 +0200
Subject: [PATCH 13/18] Switched to setattr() to reduce cyclomatic complexity

---
 telegram/ext/handler.py | 26 ++++++++++----------------
 tests/test_handler.py   |  1 -
 2 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 7467b5ee912..749c757a9a5 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -72,6 +72,8 @@ class Handler(object):
 
     """
 
+    PASSABLE_OBJECTS = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
+
     def __init__(self,
                  callback,
                  autowire=False,
@@ -143,8 +145,7 @@ def __should_pass_obj(self, name):
         the user handler's signature, makes sense in this context,
         and is not explicitly set to `False`.
         """
-        all_passable_objects = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
-        is_requested = name in all_passable_objects and name in self._callback_args
+        is_requested = name in self.PASSABLE_OBJECTS and name in self._callback_args
         if is_requested and name not in self._passable:
             warnings.warn("The argument `{}` cannot be autowired since it is not available "
                           "on `{}s`.".format(name, type(self).__name__))
@@ -162,6 +163,9 @@ def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data'
 
         The ``passable`` arguments are required to be explicit as opposed to dynamically generated
         to be absolutely safe that no arguments will be passed that are not allowed.
+
+        Args:
+            passable: An iterable that contains the allowed flags for this handler
         """
         self._passable = passable
 
@@ -178,20 +182,10 @@ def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data'
 
         self._callback_args = inspect_arguments(self.callback)
 
-        if self.__should_pass_obj('update_queue'):
-            self.pass_update_queue = True
-        if self.__should_pass_obj('job_queue'):
-            self.pass_job_queue = True
-        if self.__should_pass_obj('user_data'):
-            self.pass_user_data = True
-        if self.__should_pass_obj('chat_data'):
-            self.pass_chat_data = True
-        if self.__should_pass_obj('args'):
-            self.pass_args = True
-        if self.__should_pass_obj('groups'):
-            self.pass_groups = True
-        if self.__should_pass_obj('groupdict'):
-            self.pass_groupdict = True
+        # Actually set `pass_*` flags to True
+        for to_pass in self.PASSABLE_OBJECTS:
+            if self.__should_pass_obj(to_pass):
+                setattr(self, 'pass_' + to_pass, True)
 
         self._autowire_initialized = True
 
diff --git a/tests/test_handler.py b/tests/test_handler.py
index 342d11accd3..4dd1e0898d3 100644
--- a/tests/test_handler.py
+++ b/tests/test_handler.py
@@ -21,7 +21,6 @@
 
 from telegram.ext import Handler
 
-
 class TestHandler(object):
     test_flag = False
 

From 1216fa32ae1477828791a6ef9272217b052f0a60 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 02:18:45 +0200
Subject: [PATCH 14/18] Making flake8 happy

---
 telegram/ext/handler.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 749c757a9a5..2efff95ee77 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -72,7 +72,8 @@ class Handler(object):
 
     """
 
-    PASSABLE_OBJECTS = {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args', 'groups', 'groupdict'}
+    PASSABLE_OBJECTS = {'update_queue', 'job_queue', 'user_data', 'chat_data',
+                        'args', 'groups', 'groupdict'}
 
     def __init__(self,
                  callback,

From 6f308e80446a21854e4a24bf5bfb8c89f1fdefde Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 03:23:34 +0200
Subject: [PATCH 15/18] Making flake8 happy

---
 telegram/ext/commandhandler.py        |  7 ++++---
 telegram/ext/handler.py               | 10 ++++++----
 telegram/ext/regexhandler.py          |  3 ++-
 tests/test_callbackqueryhandler.py    |  1 -
 tests/test_handler.py                 |  4 +++-
 tests/test_precheckoutqueryhandler.py |  3 ++-
 tests/test_shippingqueryhandler.py    |  7 ++++---
 7 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/telegram/ext/commandhandler.py b/telegram/ext/commandhandler.py
index 8e84b4bb059..914a6a60f2b 100644
--- a/telegram/ext/commandhandler.py
+++ b/telegram/ext/commandhandler.py
@@ -114,7 +114,8 @@ def __init__(self,
 
         self.pass_args = pass_args
         if self.autowire:
-            self.set_autowired_flags({'update_queue', 'job_queue', 'user_data', 'chat_data', 'args'})
+            self.set_autowired_flags(
+                {'update_queue', 'job_queue', 'user_data', 'chat_data', 'args'})
 
         if isinstance(command, string_types):
             self.command = [command.lower()]
@@ -140,8 +141,8 @@ def check_update(self, update):
             :obj:`bool`
 
         """
-        if (isinstance(update, Update)
-            and (update.message or update.edited_message and self.allow_edited)):
+        if (isinstance(update, Update) and
+                (update.message or update.edited_message and self.allow_edited)):
             message = update.message or update.edited_message
 
             if message.text:
diff --git a/telegram/ext/handler.py b/telegram/ext/handler.py
index 2efff95ee77..7b00958da7e 100644
--- a/telegram/ext/handler.py
+++ b/telegram/ext/handler.py
@@ -26,9 +26,10 @@ class Handler(object):
     """
     The base class for all update handlers. Create custom handlers by inheriting from it.
 
-    If your subclass needs the *autowiring* functionality, make sure to call ``set_autowired_flags``
-    **after** initializing the ``pass_*`` members. The ``passable`` argument to this method denotes
-    all the flags your Handler supports, e.g. ``{'update_queue', 'job_queue', 'args'}``.
+    If your subclass needs the *autowiring* functionality, make sure to call
+    ``set_autowired_flags`` **after** initializing the ``pass_*`` members. The ``passable``
+    argument to this method denotes all the flags your Handler supports, e.g.
+    ``{'update_queue', 'job_queue', 'args'}``.
 
     Attributes:
         callback (:obj:`callable`): The callback function for this handler.
@@ -153,7 +154,8 @@ def __should_pass_obj(self, name):
             return False
         return is_requested
 
-    def set_autowired_flags(self, passable={'update_queue', 'job_queue', 'user_data', 'chat_data'}):
+    def set_autowired_flags(self,
+                            passable={'update_queue', 'job_queue', 'user_data', 'chat_data'}):
         """
         This method inspects the callback handler for used arguments. If it finds arguments that
         are ``passable``, i.e. types that can also be passed by the various ``pass_*`` flags,
diff --git a/telegram/ext/regexhandler.py b/telegram/ext/regexhandler.py
index 616a97aff14..c7dfd2a713d 100644
--- a/telegram/ext/regexhandler.py
+++ b/telegram/ext/regexhandler.py
@@ -138,7 +138,8 @@ def __init__(self,
         self.pass_groups = pass_groups
         self.pass_groupdict = pass_groupdict
         if self.autowire:
-            self.set_autowired_flags({'groups', 'groupdict', 'update_queue', 'job_queue', 'user_data', 'chat_data'})
+            self.set_autowired_flags(
+                {'groups', 'groupdict', 'update_queue', 'job_queue', 'user_data', 'chat_data'})
         self.allow_edited = allow_edited
         self.message_updates = message_updates
         self.channel_post_updates = channel_post_updates
diff --git a/tests/test_callbackqueryhandler.py b/tests/test_callbackqueryhandler.py
index 39d5b9637a5..202127afb7e 100644
--- a/tests/test_callbackqueryhandler.py
+++ b/tests/test_callbackqueryhandler.py
@@ -195,7 +195,6 @@ def test_autowire(self, dp, callback_query):
         dp.process_update(callback_query)
         assert self.test_flag
 
-
     def test_other_update_types(self, false_update):
         handler = CallbackQueryHandler(self.callback_basic)
         assert not handler.check_update(false_update)
diff --git a/tests/test_handler.py b/tests/test_handler.py
index 4dd1e0898d3..61ab05fa120 100644
--- a/tests/test_handler.py
+++ b/tests/test_handler.py
@@ -21,6 +21,7 @@
 
 from telegram.ext import Handler
 
+
 class TestHandler(object):
     test_flag = False
 
@@ -117,5 +118,6 @@ def test_get_available_pass_flags(self):
 
         handler.set_autowired_flags()
 
-        assert set(handler._get_available_pass_flags()) == {'pass_update_queue', 'pass_job_queue', 'pass_chat_data',
+        assert set(handler._get_available_pass_flags()) == {'pass_update_queue', 'pass_job_queue',
+                                                            'pass_chat_data',
                                                             'pass_user_data'}
diff --git a/tests/test_precheckoutqueryhandler.py b/tests/test_precheckoutqueryhandler.py
index 135c437361c..500572ea683 100644
--- a/tests/test_precheckoutqueryhandler.py
+++ b/tests/test_precheckoutqueryhandler.py
@@ -49,7 +49,8 @@ def false_update(request):
 
 @pytest.fixture(scope='class')
 def pre_checkout_query():
-    return Update(1, pre_checkout_query=PreCheckoutQuery('id', User(1, 'test user', False), 'EUR', 223,
+    return Update(1, pre_checkout_query=PreCheckoutQuery('id', User(1, 'test user', False), 'EUR',
+                                                         223,
                                                          'invoice_payload'))
 
 
diff --git a/tests/test_shippingqueryhandler.py b/tests/test_shippingqueryhandler.py
index 43cd71a407a..edd57762c41 100644
--- a/tests/test_shippingqueryhandler.py
+++ b/tests/test_shippingqueryhandler.py
@@ -49,9 +49,10 @@ def false_update(request):
 
 @pytest.fixture(scope='class')
 def shiping_query():
-    return Update(1, shipping_query=ShippingQuery(42, User(1, 'test user', False), 'invoice_payload',
-                                                  ShippingAddress('EN', 'my_state', 'my_city',
-                                                                  'steer_1', '', 'post_code')))
+    return Update(1,
+                  shipping_query=ShippingQuery(42, User(1, 'test user', False), 'invoice_payload',
+                                               ShippingAddress('EN', 'my_state', 'my_city',
+                                                               'steer_1', '', 'post_code')))
 
 
 class TestShippingQueryHandler(object):

From 94031138a3986b327190e64311335318bae289d0 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 13:04:36 +0200
Subject: [PATCH 16/18] Removed unneeded tuple return values

---
 telegram/utils/inspection.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/telegram/utils/inspection.py b/telegram/utils/inspection.py
index a6a6b7a845c..090ab7e1467 100644
--- a/telegram/utils/inspection.py
+++ b/telegram/utils/inspection.py
@@ -1,10 +1,13 @@
 import inspect
 
+"""
+Reflects on a function or method to retrieve all positional and keyword arguments available.
+"""
 try:
     def inspect_arguments(func):
         args, _, _, _ = inspect.getargspec(func)
         return args
 except Warning:  # `getargspec()` is deprecated in Python3
     def inspect_arguments(func):
-        args, varargs, varkw, defaults, kwonlyargs, kwonlydefaults, annotations = inspect.getfullargspec(func)
+        args, _, _, _, _, _, _ = inspect.getfullargspec(func)
         return args

From 233960675beefd1fa1389d7265843946a07f6792 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 13:39:03 +0200
Subject: [PATCH 17/18] Added erroneous parameter definition callback

---
 examples/autowiring.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/autowiring.py b/examples/autowiring.py
index ed4151dfecc..ad28205fbf3 100644
--- a/examples/autowiring.py
+++ b/examples/autowiring.py
@@ -64,9 +64,13 @@ def regex_with_groups(bot, update, groups, groupdict):
     update.message.reply_text('Groupdict: {}'.format(groupdict))
 
 
+def callback_undefined_arguments(bot, update, chat_data, groups):
+    pass
+
+
 def main():
     # Create the Updater and pass it your bot's token.
-    updater = Updater("TOKEN")
+    updater = Updater("324133401:AAHVjjXotCDXC_kIIkfM0O6bm9-l7BfJw-I")
 
     # Get the dispatcher to register handlers
     dp = updater.dispatcher
@@ -92,6 +96,10 @@ def main():
     # ... is equivalent to passing them automagically.
     dp.add_handler(CommandHandler("data", callback_with_data, autowire=True))
 
+    # An example of using the `groups` parameter which is not defined for a CommandHandler.
+    # Uncomment the line below and you will see a warning.
+    # dp.add_handler(CommandHandler("erroneous", callback_undefined_arguments, autowire=True))
+
     dp.add_error_handler(error)
     updater.start_polling()
 

From 287007fb17eacd2358d0f67345ccc3f4afa1ab98 Mon Sep 17 00:00:00 2001
From: JosXa <joscha.goetzer@gmail.com>
Date: Sat, 7 Oct 2017 13:41:49 +0200
Subject: [PATCH 18/18] Added erroneous parameter definition callback

---
 examples/autowiring.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/autowiring.py b/examples/autowiring.py
index ad28205fbf3..382e8ba1a41 100644
--- a/examples/autowiring.py
+++ b/examples/autowiring.py
@@ -70,7 +70,7 @@ def callback_undefined_arguments(bot, update, chat_data, groups):
 
 def main():
     # Create the Updater and pass it your bot's token.
-    updater = Updater("324133401:AAHVjjXotCDXC_kIIkfM0O6bm9-l7BfJw-I")
+    updater = Updater("TOKEN")
 
     # Get the dispatcher to register handlers
     dp = updater.dispatcher

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