Update frame.py

pandas-dev · Dec 2, 2023 · 1d42814 · 1d42814
1 parent 4cdbaac
commit 1d42814
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
@@ -4211,7 +4211,7 @@ def __setitem__(self, key, value) -> None:
                 warn_copy_on_write()
                 or (
                     not warn_copy_on_write()
-                    and any(b.refs.has_reference() for b in self._mgr.blocks)
+                    and any(b.refs.has_reference() for b in self._mgr.blocks)  # type: ignore[union-attr]
                 )
             ):
                 warnings.warn(