xinrong-meng commented on code in PR #41989:
URL: https://github.com/apache/spark/pull/41989#discussion_r1264028428
##########
python/pyspark/sql/connect/functions.py:
##########
@@ -3891,6 +3894,21 @@ def udf(
udf.__doc__ = pysparkfuncs.udf.__doc__
+def udtf(
+ cls: Optional[Type] = None,
+ *,
+ returnType: Union[StructType, str],
+ useArrow: Optional[bool] = None,
+) -> Union["UserDefinedTableFunction", functools.partial]:
Review Comment:
We typically do not use `functools.partial` as a type hint in Python. Shall
we use `Callable` following the `udf` return type hints?
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