Specify stacklevel=2 to these warnings.warn calls, so that users can actually see where these deprecated methods are called, instead of a trace in message_factory.py file itself.

PiperOrigin-RevId: 546104883

python/google/protobuf/message_factory.py

@@ -176,9 +176,12 @@ class MessageFactory(object):
     Returns:
       A class describing the passed in descriptor.
     """
-    warnings.warn('MessageFactory class is deprecated. Please use '
-                  'GetMessageClass() instead of MessageFactory.GetPrototype. '
-                  'MessageFactory class will be removed after 2024.')
+    warnings.warn(
+        'MessageFactory class is deprecated. Please use '
+        'GetMessageClass() instead of MessageFactory.GetPrototype. '
+        'MessageFactory class will be removed after 2024.',
+        stacklevel=2,
+    )
     return GetMessageClass(descriptor)
 
   def CreatePrototype(self, descriptor):
@@ -193,9 +196,12 @@ class MessageFactory(object):
     Returns:
       A class describing the passed in descriptor.
     """
-    warnings.warn('Directly call CreatePrototype is wrong. Please use '
-                  'GetMessageClass() method instead. Directly use '
-                  'CreatePrototype will raise error after July 2023.')
+    warnings.warn(
+        'Directly call CreatePrototype is wrong. Please use '
+        'GetMessageClass() method instead. Directly use '
+        'CreatePrototype will raise error after July 2023.',
+        stacklevel=2,
+    )
     return _InternalCreateMessageClass(descriptor)
 
   def GetMessages(self, files):
@@ -212,10 +218,13 @@ class MessageFactory(object):
       any dependent messages as well as any messages defined in the same file as
       a specified message.
     """
-    warnings.warn('MessageFactory class is deprecated. Please use '
-                  'GetMessageClassesForFiles() instead of '
-                  'MessageFactory.GetMessages(). MessageFactory class '
-                  'will be removed after 2024.')
+    warnings.warn(
+        'MessageFactory class is deprecated. Please use '
+        'GetMessageClassesForFiles() instead of '
+        'MessageFactory.GetMessages(). MessageFactory class '
+        'will be removed after 2024.',
+        stacklevel=2,
+    )
     return GetMessageClassesForFiles(files, self.pool)