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GH1043 Update _typing.pyi: add "cross" option to JoinHow #1044

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Merged
merged 6 commits into from
Nov 26, 2024
Merged

GH1043 Update _typing.pyi: add "cross" option to JoinHow #1044

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84ccb39
Update _typing.pyi: add "cross" option to JoinHow
brzegorzTesco Nov 21, 2024
dbda093
Removed "cross" option from JoinHow and added it back to MergeHow
brzegorzTesco Nov 22, 2024
64b7dab
Replaced JoinHow with MergeHow in frame.join
brzegorzTesco Nov 22, 2024
5807199
Added a test for join "how"
brzegorzTesco Nov 22, 2024
f00b7c6
Update test_frame.py: used check(assert_type pattern in unit test
brzegorzTesco Nov 25, 2024
752bc05
Update test_frame.py
brzegorzTesco Nov 26, 2024
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2 changes: 1 addition & 1 deletion pandas-stubs/core/frame.pyi
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Expand Up @@ -1421,7 +1421,7 @@ class DataFrame(NDFrame, OpsMixin):
self,
other: DataFrame | Series | list[DataFrame | Series],
on: _str | list[_str] | None = ...,
how: JoinHow = ...,
how: MergeHow = ...,
lsuffix: _str = ...,
rsuffix: _str = ...,
sort: _bool = ...,
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10 changes: 10 additions & 0 deletions tests/test_frame.py
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Expand Up @@ -2345,6 +2345,16 @@ def test_join() -> None:
check(assert_type(left.join(right, validate="1:m"), pd.DataFrame), pd.DataFrame)


def test_types_join() -> None:
df1 = pd.DataFrame({"A":[1,2], "B": ["test", "test"]})
df2 = pd.DataFrame({"C":[2, 3], "D": ["test", "test"]})
check(assert_type(df1.join(df2, how="cross"), pd.DataFrame), pd.DataFrame)
check(assert_type(df1.join(df2, how="inner"), pd.DataFrame), pd.DataFrame)
check(assert_type(df1.join(df2, how="outer"), pd.DataFrame), pd.DataFrame)
check(assert_type(df1.join(df2, how="left"), pd.DataFrame), pd.DataFrame)
check(assert_type(df1.join(df2, how="right"), pd.DataFrame), pd.DataFrame)


def test_types_ffill() -> None:
# GH 44
df = pd.DataFrame([[1, 2, 3]])
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