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Type DataFrame methods: __setitem__, asof, set_axis #1473

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Type DataFrame methods: __setitem__, asof, set_axis #1473

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0b17616
type asof
MarcoGorelli Nov 6, 2025
a05e17f
type setitem
MarcoGorelli Nov 6, 2025
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74 changes: 68 additions & 6 deletions pandas-stubs/core/frame.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ from pandas import (
Timestamp,
)
from pandas.core.arraylike import OpsMixin
from pandas.core.base import IndexOpsMixin
from pandas.core.generic import NDFrame
from pandas.core.groupby.generic import DataFrameGroupBy
from pandas.core.indexers import BaseIndexer
Expand Down Expand Up @@ -90,6 +91,7 @@ from pandas._typing import (
ArrayLike,
AstypeArg,
Axes,
AxesData,
Axis,
AxisColumn,
AxisIndex,
Expand Down Expand Up @@ -191,6 +193,8 @@ class _iLocIndexerFrame(_iLocIndexer, Generic[_T]):
| tuple[slice]
),
) -> _T: ...

# Keep in sync with `DataFrame.__setitem__`
def __setitem__(
self,
idx: (
Expand All @@ -203,7 +207,7 @@ class _iLocIndexerFrame(_iLocIndexer, Generic[_T]):
),
value: (
Scalar
| Series
| IndexOpsMixin
| DataFrame
| np.ndarray
| NAType
Expand Down Expand Up @@ -267,6 +271,8 @@ class _LocIndexerFrame(_LocIndexer, Generic[_T]):
) -> Series: ...
@overload
def __getitem__(self, idx: tuple[Scalar, slice]) -> Series | _T: ...

# Keep in sync with `DataFrame.__setitem__`
@overload
def __setitem__(
self,
Expand All @@ -278,7 +284,7 @@ class _LocIndexerFrame(_LocIndexer, Generic[_T]):
| NAType
| NaTType
| ArrayLike
| Series
| IndexOpsMixin
| DataFrame
| list
| Mapping[Hashable, Scalar | NAType | NaTType]
Expand Down Expand Up @@ -322,7 +328,7 @@ class _AtIndexerFrame(_AtIndexer):
| NAType
| NaTType
| ArrayLike
| Series
| IndexOpsMixin
| DataFrame
| list
| Mapping[Hashable, Scalar | NAType | NaTType]
Expand Down Expand Up @@ -794,7 +800,57 @@ class DataFrame(NDFrame, OpsMixin, _GetItemHack):
def isetitem(
self, loc: int | Sequence[int], value: Scalar | ArrayLike | list[Any]
) -> None: ...
def __setitem__(self, key, value) -> None: ...

# Keep in sync with `_iLocIndexerFrame.__setitem__`
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@cmp0xff cmp0xff Nov 6, 2025

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Would it be possible to make auxiliary @type_check_only classes for all places, making Index, Series, _iLocIndexerFrame etc. subclasses of these auxliliary classes, so that we can deduplicate?

@overload
def __setitem__(
self,
idx: (
int
| IndexType
| tuple[int, int]
| tuple[IndexType, int]
| tuple[IndexType, IndexType]
| tuple[int, IndexType]
),
value: (
Scalar
| IndexOpsMixin
| DataFrame
| np.ndarray
| NAType
| NaTType
| Mapping[Hashable, Scalar | NAType | NaTType]
| None
),
) -> None: ...
# Keep in sync with `_LocIndexerFrame.__setitem__`
@overload
def __setitem__(
self,
idx: (
MaskType | StrLike | _IndexSliceTuple | list[ScalarT] | IndexingInt | slice
),
value: (
Scalar
| NAType
| NaTType
| ArrayLike
| IndexOpsMixin
| DataFrame
| list
| Mapping[Hashable, Scalar | NAType | NaTType]
| None
),
) -> None: ...
@overload
def __setitem__(
self,
idx: tuple[_IndexSliceTuple, Hashable],
value: (
Scalar | NAType | NaTType | ArrayLike | IndexOpsMixin | list | dict | None
),
) -> None: ...
@overload
def query(
self,
Expand Down Expand Up @@ -1844,7 +1900,11 @@ class DataFrame(NDFrame, OpsMixin, _GetItemHack):
**kwargs: Any,
) -> Series[_bool]: ...
@final
def asof(self, where, subset: _str | list[_str] | None = None) -> Self: ...
def asof(
self,
where: Scalar | AnyArrayLike | Sequence[Scalar],
subset: Hashable | list[Hashable] | None = None,
) -> Self: ...
@final
def asfreq(
self,
Expand Down Expand Up @@ -2394,7 +2454,9 @@ class DataFrame(NDFrame, OpsMixin, _GetItemHack):
**kwargs: Any,
) -> Series: ...
# Not actually positional, but used to handle removal of deprecated
def set_axis(self, labels, *, axis: Axis = ..., copy: _bool = ...) -> Self: ...
def set_axis(
self, labels: AxesData, *, axis: Axis = 0, copy: _bool = ...
) -> Self: ...
def skew(
self,
axis: Axis | None = ...,
Expand Down
8 changes: 4 additions & 4 deletions pandas-stubs/core/series.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -535,14 +535,14 @@ class Series(IndexOpsMixin[S1], ElementOpsMixin[S1], NDFrame):
@final
def __getattr__(self, name: _str) -> S1: ...

# Keep in sync with `iLocIndexerSeries.__getitem__`
# Keep in sync with `_iLocIndexerSeries.__getitem__`
@overload
def __getitem__(self, idx: IndexingInt) -> S1: ...
@overload
def __getitem__(
self, idx: Index | Series | slice | np_ndarray_anyint
) -> Series[S1]: ...
# Keep in sync with `LocIndexerSeries.__getitem__`
# Keep in sync with `_LocIndexerSeries.__getitem__`
@overload
def __getitem__( # type: ignore[overload-overlap] # pyright: ignore[reportOverlappingOverload]
self,
Expand Down Expand Up @@ -1523,8 +1523,8 @@ class Series(IndexOpsMixin[S1], ElementOpsMixin[S1], NDFrame):
@final
def asof(
self,
where: Scalar | Sequence[Scalar],
subset: _str | Sequence[_str] | None = None,
where: Scalar | AnyArrayLike | Sequence[Scalar],
subset: None = None,
) -> Scalar | Series[S1]: ...
@overload
def clip( # pyright: ignore[reportOverlappingOverload]
Expand Down
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