[fix] Fix a crash for class decorators mistaken for class attributes (pylint-dev#10362) (pylint-dev#10363)

github-actions[bot] · Pierre-Sassoulas · web-flow · commit 05331112c04c · 2025-05-03T11:49:29.000+02:00
Closes pylint-dev#10105 (cherry picked from commit 1812899) Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>
diff --git a/doc/whatsnew/fragments/10105.bugfix b/doc/whatsnew/fragments/10105.bugfix
@@ -0,0 +1,3 @@
+Fixed a crash when importing a class decorator that did not exist with the same name than a class attribute after the class definition.
+
+Closes #10105
diff --git a/pylint/checkers/variables.py b/pylint/checkers/variables.py
@@ -2448,7 +2448,7 @@ def _is_only_type_assignment(
         node_frame = node.frame()
 
         parent = node
-        while parent is not defstmt_frame.parent:
+        while parent not in {defstmt_frame.parent, None}:
             parent_scope = parent.scope()
 
             # Find out if any nonlocals receive values in nested functions
diff --git a/tests/functional/r/regression_02/regression_10105.py b/tests/functional/r/regression_02/regression_10105.py
@@ -0,0 +1,9 @@
+# pylint: disable=too-few-public-methods,missing-docstring,used-before-assignment,import-error,unused-import
+# pylint: disable=wrong-import-position
+
+
+@decorator
+class DecoratedClass:
+    decorator: int
+
+import decorator

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+Fixed a crash when importing a class decorator that did not exist with the same name than a class attribute after the class definition.`
	`2`	`+`
	`3`	`+Closes #10105`