diff --git a/app/ch05_jinja_templates/final/pypi_org/infrastructure/view_modifiers.py b/app/ch05_jinja_templates/final/pypi_org/infrastructure/view_modifiers.py
index 0c0941eb..53a0e36d 100644
--- a/app/ch05_jinja_templates/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch05_jinja_templates/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch06_routing/final/pypi_org/infrastructure/view_modifiers.py b/app/ch06_routing/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch06_routing/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch06_routing/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch06_routing/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch06_routing/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch06_routing/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch06_routing/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch08_adding_our_design/final/pypi_org/infrastructure/view_modifiers.py b/app/ch08_adding_our_design/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch08_adding_our_design/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch08_adding_our_design/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch08_adding_our_design/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch08_adding_our_design/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch08_adding_our_design/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch08_adding_our_design/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch09_sqlalchemy/final/pypi_org/infrastructure/view_modifiers.py b/app/ch09_sqlalchemy/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch09_sqlalchemy/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch09_sqlalchemy/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch09_sqlalchemy/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch09_sqlalchemy/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch09_sqlalchemy/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch09_sqlalchemy/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch10_using_sqlachemy/final/pypi_org/infrastructure/view_modifiers.py b/app/ch10_using_sqlachemy/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch10_using_sqlachemy/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch10_using_sqlachemy/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch10_using_sqlachemy/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch10_using_sqlachemy/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch10_using_sqlachemy/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch10_using_sqlachemy/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch11_migrations/final/pypi_org/infrastructure/view_modifiers.py b/app/ch11_migrations/final/pypi_org/infrastructure/view_modifiers.py
index 0c0941eb..53a0e36d 100644
--- a/app/ch11_migrations/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch11_migrations/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch11_migrations/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch11_migrations/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch11_migrations/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch11_migrations/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch12-forms/final/pypi_org/infrastructure/view_modifiers.py b/app/ch12-forms/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch12-forms/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch12-forms/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch12-forms/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch12-forms/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch12-forms/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch12-forms/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch13-validation/final/pypi_org/infrastructure/view_modifiers.py b/app/ch13-validation/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch13-validation/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch13-validation/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch13-validation/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch13-validation/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch13-validation/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch13-validation/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch14_testing/final/pypi_org/infrastructure/view_modifiers.py b/app/ch14_testing/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch14_testing/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch14_testing/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch14_testing/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch14_testing/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch14_testing/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch14_testing/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch15_deploy/final/pypi_org/infrastructure/view_modifiers.py b/app/ch15_deploy/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch15_deploy/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch15_deploy/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch15_deploy/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch15_deploy/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch15_deploy/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch15_deploy/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch16_mongodb/final/pypi_org/infrastructure/view_modifiers.py b/app/ch16_mongodb/final/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch16_mongodb/final/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch16_mongodb/final/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 
diff --git a/app/ch16_mongodb/starter/pypi_org/infrastructure/view_modifiers.py b/app/ch16_mongodb/starter/pypi_org/infrastructure/view_modifiers.py
index 0978163e..c6c92d04 100644
--- a/app/ch16_mongodb/starter/pypi_org/infrastructure/view_modifiers.py
+++ b/app/ch16_mongodb/starter/pypi_org/infrastructure/view_modifiers.py
@@ -5,7 +5,7 @@
 import werkzeug.wrappers
 
 
-def response(*, mimetype: str = None, template_file: str = None):
+def response(*, mimetype: object = None, template_file: object = None) -> callable:
     def response_inner(f):
         # print("Wrapping in response {}".format(f.__name__), flush=True)
 

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