zero323 commented on a change in pull request #33399:
URL: https://github.com/apache/spark/pull/33399#discussion_r672996669
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File path: python/pyspark/sql/functions.pyi
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@@ -359,13 +360,13 @@ def variance(col: ColumnOrName) -> Column: ...
@overload
def udf(
f: Callable[..., Any], returnType: DataTypeOrString = ...
-) -> Callable[..., Column]: ...
+) -> UserDefinedFunction: ...
Review comment:
Also, `UserDefinedFunctionWrapper` is just a typing helper without
corresponding class, so let's move it into `pyspark.sql._typing.pyi`.
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