diff --git a/telegram/ext/conversationhandler.py b/telegram/ext/conversationhandler.py
index ba621fdeaa5..2bdb4529841 100644
--- a/telegram/ext/conversationhandler.py
+++ b/telegram/ext/conversationhandler.py
@@ -190,6 +190,7 @@ class ConversationHandler(Handler[Update, CCT]):
'_entry_points',
'_states',
'_fallbacks',
+ '_prefallbacks',
'_allow_reentry',
'_per_user',
'_per_chat',
@@ -219,6 +220,7 @@ def __init__(
entry_points: List[Handler[Update, CCT]],
states: Dict[object, List[Handler[Update, CCT]]],
fallbacks: List[Handler[Update, CCT]],
+ prefallbacks: List[Handler[Update, CCT]] = List(),
allow_reentry: bool = False,
per_chat: bool = True,
per_user: bool = True,
@@ -232,6 +234,7 @@ def __init__(
self.run_async = run_async
self._entry_points = entry_points
+ self._prefallbacks = prefallbacks
self._states = states
self._fallbacks = fallbacks
@@ -267,6 +270,7 @@ def __init__(
all_handlers: List[Handler] = []
all_handlers.extend(entry_points)
+ all_handlers.extend(prefallbacks)
all_handlers.extend(fallbacks)
for state_handlers in states.values():
@@ -323,6 +327,18 @@ def entry_points(self) -> List[Handler]:
@entry_points.setter
def entry_points(self, value: object) -> NoReturn:
raise ValueError('You can not assign a new value to entry_points after initialization.')
+
+ @property
+ def prefallbacks(self) -> List[Handler]:
+ """List[:class:`telegram.ext.Handler`]: A list of handlers that might be used if
+ the user is in a conversation. This list of handlers will be processed before all the others handlers.
+ This list helps to reduce usage of "and not" filters.
+ """
+ return self._prefallbacks
+
+ @prefallbacks.setter
+ def prefallbacks(self, value: object) -> NoReturn:
+ raise ValueError('You can not assign a new value to prefallbacks after initialization.')
@property
def states(self) -> Dict[object, List[Handler]]:
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