dchvn commented on a change in pull request #35236:
URL: https://github.com/apache/spark/pull/35236#discussion_r787324507
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File path: python/pyspark/pandas/typedef/typehints.py
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@@ -559,6 +559,9 @@ def infer_return_type(f: Callable) -> Union[SeriesType,
DataFrameType, ScalarTyp
tpe = get_type_hints(f).get("return", None)
+ if tpe is None:
+ raise TypeError("A return value is required for the input function")
Review comment:
That make sense! thanks!
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