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GH941 add UnknownSeries overload for Series.map #1198

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merged 1 commit into from
Apr 25, 2025
Merged

GH941 add UnknownSeries overload for Series.map #1198

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6 changes: 6 additions & 0 deletions pandas-stubs/core/series.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -965,6 +965,12 @@ class Series(IndexOpsMixin[S1], NDFrame):
na_action: None = ...,
) -> Series[S2]: ...
@overload
def map(
self,
arg: Callable[[Any], Any] | Mapping[Any, Any] | UnknownSeries,
na_action: Literal["ignore"] | None = ...,
) -> UnknownSeries: ...
@overload
def aggregate(
self: Series[int],
func: Literal["mean"],
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6 changes: 6 additions & 0 deletions tests/test_series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3390,6 +3390,12 @@ def callable(x: int) -> str:
assert_type(s.map(series, na_action="ignore"), "pd.Series[str]"), pd.Series, str
)

unknown_series = pd.Series([1, 0, None])
check(
assert_type(unknown_series.map({1: True, 0: False, None: None}), "pd.Series"),
pd.Series,
)


def test_map_na() -> None:
s: pd.Series[int] = pd.Series([1, pd.NA, 3])
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