Advanced deprecation warnings for Django 3.1.

django/utils/deprecation.py

@@ -2,7 +2,7 @@ import inspect
 import warnings
 
 
-class RemovedInDjango31Warning(DeprecationWarning):
+class RemovedInNextVersionWarning(DeprecationWarning):
     pass
 
 
@@ -10,9 +10,6 @@ class RemovedInDjango40Warning(PendingDeprecationWarning):
     pass
 
 
-RemovedInNextVersionWarning = RemovedInDjango31Warning
-
-
 class warn_about_renamed_method:
     def __init__(self, class_name, old_method_name, new_method_name, deprecation_warning):
         self.class_name = class_name

docs/internals/deprecation.txt

@@ -34,6 +34,9 @@ details on these changes.
 
 * ``django.utils.http.is_safe_url()`` will be removed.
 
+See the :ref:`Django 3.1 release notes <deprecated-features-3.1>` for more
+details on these changes.
+
 .. _deprecation-removed-in-3.1:
 
 3.1

tests/runtests.py

@@ -24,9 +24,7 @@ else:
     from django.test.runner import default_test_processes
     from django.test.selenium import SeleniumTestCaseBase
     from django.test.utils import get_runner
-    from django.utils.deprecation import (
+    from django.utils.deprecation import RemovedInDjango40Warning
-        RemovedInDjango31Warning, RemovedInDjango40Warning,
-    )
     from django.utils.log import DEFAULT_LOGGING
     from django.utils.version import PY37
 
@@ -40,7 +38,6 @@ else:
 
 # Make deprecation warnings errors to ensure no usage of deprecated features.
 warnings.simplefilter("error", RemovedInDjango40Warning)
-warnings.simplefilter('error', RemovedInDjango31Warning)
 # Make runtime warning errors to ensure no usage of error prone patterns.
 warnings.simplefilter("error", RuntimeWarning)
 # Ignore known warnings in test dependencies.