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TYP: fix hashable keys for pd.concat #46608

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Merged
merged 2 commits into from
Apr 4, 2022
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TYP: fix hashable keys for pd.concat #46608

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19f22a1
TYP: fix hashable keys for pd.concat
twoertwein Apr 2, 2022
3cc8434
Merge remote-tracking branch 'upstream/main' into concat
twoertwein Apr 3, 2022
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1 change: 1 addition & 0 deletions pandas/_typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,7 @@
else:
npt: Any = None

HashableT = TypeVar("HashableT", bound=Hashable)

# array-like

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19 changes: 11 additions & 8 deletions pandas/core/reshape/concat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,10 @@

import numpy as np

from pandas._typing import Axis
from pandas._typing import (
Axis,
HashableT,
)
from pandas.util._decorators import (
cache_readonly,
deprecate_nonkeyword_arguments,
Expand Down Expand Up @@ -62,7 +65,7 @@

@overload
def concat(
objs: Iterable[DataFrame] | Mapping[Hashable, DataFrame],
objs: Iterable[DataFrame] | Mapping[HashableT, DataFrame],
axis: Literal[0, "index"] = ...,
join: str = ...,
ignore_index: bool = ...,
Expand All @@ -78,7 +81,7 @@ def concat(

@overload
def concat(
objs: Iterable[Series] | Mapping[Hashable, Series],
objs: Iterable[Series] | Mapping[HashableT, Series],
axis: Literal[0, "index"] = ...,
join: str = ...,
ignore_index: bool = ...,
Expand All @@ -94,7 +97,7 @@ def concat(

@overload
def concat(
objs: Iterable[NDFrame] | Mapping[Hashable, NDFrame],
objs: Iterable[NDFrame] | Mapping[HashableT, NDFrame],
axis: Literal[0, "index"] = ...,
join: str = ...,
ignore_index: bool = ...,
Expand All @@ -110,7 +113,7 @@ def concat(

@overload
def concat(
objs: Iterable[NDFrame] | Mapping[Hashable, NDFrame],
objs: Iterable[NDFrame] | Mapping[HashableT, NDFrame],
axis: Literal[1, "columns"],
join: str = ...,
ignore_index: bool = ...,
Expand All @@ -126,7 +129,7 @@ def concat(

@overload
def concat(
objs: Iterable[NDFrame] | Mapping[Hashable, NDFrame],
objs: Iterable[NDFrame] | Mapping[HashableT, NDFrame],
axis: Axis = ...,
join: str = ...,
ignore_index: bool = ...,
Expand All @@ -142,7 +145,7 @@ def concat(

@deprecate_nonkeyword_arguments(version=None, allowed_args=["objs"])
def concat(
objs: Iterable[NDFrame] | Mapping[Hashable, NDFrame],
objs: Iterable[NDFrame] | Mapping[HashableT, NDFrame],
axis: Axis = 0,
join: str = "outer",
ignore_index: bool = False,
Expand Down Expand Up @@ -367,7 +370,7 @@ class _Concatenator:

def __init__(
self,
objs: Iterable[NDFrame] | Mapping[Hashable, NDFrame],
objs: Iterable[NDFrame] | Mapping[HashableT, NDFrame],
axis=0,
join: str = "outer",
keys=None,
Expand Down