amaliujia commented on code in PR #38318:
URL: https://github.com/apache/spark/pull/38318#discussion_r1015762416
##########
python/pyspark/sql/connect/dataframe.py:
##########
@@ -323,6 +323,14 @@ def unionByName(self, other: "DataFrame",
allowMissingColumns: bool = False) ->
def where(self, condition: Expression) -> "DataFrame":
return self.filter(condition)
+ def summary(self, *statistics: str) -> "DataFrame":
+ _statistics: List[str] = list(statistics)
+ assert all(isinstance(s, str) for s in _statistics)
Review Comment:
In contrast, I guess the assert in `plan.py` is ok because that is internal
API and we can implement it right so assert on unexpected things (and developer
can fix when it really happens).
```
def __init__(self, child: Optional["LogicalPlan"], function: str,
**kwargs: Any) -> None:
super().__init__(child)
assert function in ["summary"]
self.function = function
```
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