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GH1285 Allow range in pd.MultiIndex.from_product #1296

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Merged
merged 1 commit into from
Jul 28, 2025
Merged

GH1285 Allow range in pd.MultiIndex.from_product #1296

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2 changes: 1 addition & 1 deletion pandas-stubs/core/indexes/multi.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,7 @@ class MultiIndex(Index):
@classmethod
def from_product(
cls,
iterables: Sequence[SequenceNotStr[Hashable] | pd.Series | pd.Index],
iterables: Sequence[SequenceNotStr[Hashable] | pd.Series | pd.Index | range],
sortorder: int | None = ...,
names: SequenceNotStr[Hashable] = ...,
) -> Self: ...
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13 changes: 13 additions & 0 deletions tests/test_indexes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1384,3 +1384,16 @@ def test_index_infer_objects() -> None:
df = pd.DataFrame({"A": ["a", 1, 2, 3]})
idx = df.set_index("A").index[1:]
check(assert_type(idx.infer_objects(), pd.Index), pd.Index)


def test_multiindex_range() -> None:
"""Test using range in `MultiIndex.from_product` GH1285."""
midx = pd.MultiIndex.from_product(
[range(3), range(5)],
)
check(assert_type(midx, pd.MultiIndex), pd.MultiIndex)

midx_mixed_types = pd.MultiIndex.from_product(
[range(3), pd.Series([2, 3, 5])],
)
check(assert_type(midx_mixed_types, pd.MultiIndex), pd.MultiIndex)
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