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-rw-r--r--examples/opengl/hellogl2/window.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/opengl/hellogl2/window.py b/examples/opengl/hellogl2/window.py
index a12636051..ad61d2f97 100644
--- a/examples/opengl/hellogl2/window.py
+++ b/examples/opengl/hellogl2/window.py
@@ -11,7 +11,7 @@ from glwidget import GLWidget
def _main_window():
- for t in qApp.topLevelWidgets():
+ for t in qApp.topLevelWidgets(): # noqa: F821
if isinstance(t, QMainWindow):
return t
return None