HyukjinKwon commented on code in PR #38879:
URL: https://github.com/apache/spark/pull/38879#discussion_r1040549249
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python/pyspark/sql/connect/plan.py:
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@@ -249,6 +280,7 @@ class Project(LogicalPlan):
def __init__(self, child: Optional["LogicalPlan"], *columns:
"ColumnOrName") -> None:
super().__init__(child)
self._raw_columns = list(columns)
+ _all_of(self._raw_columns, ColumnOrName)
Review Comment:
Hm .. typing instances aren't actually supposed to be used runtime type
checking. In addition, `_all_of` implementation seems like extracting the
arguments from the type hints which won't cover a case like `Dict[str, int]`.
My understanding of adding type hints is also to avoid such type checking on
each argument so I don't feel strongly on this change to be honest.
Adding @zero323 who has a better insight in this.
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