Repository: pandas-dev/pandas
File: pandas/core/generic.py (Python)

Code before:
        columns: IndexLabel | ListLike = ...,
        level: Level | None = ...,
        inplace: bool = ...,
        errors: IgnoreRaise = ...,
    ) -> Self | None: ...

    def drop(
        self,
        labels: IndexLabel | ListLike = None,
        *,
        axis: Axis = 0,
        index: IndexLabel | ListLike = None,
        columns: IndexLabel | ListLike = None,
        level: Level | None = None,
        inplace: bool = False,
        errors: IgnoreRaise = "raise",
    ) -> Self | None:
        inplace = validate_bool_kwarg(inplace, "inplace")

        if labels is not None:
            if index is not None or columns is not None:
                raise ValueError("Cannot specify both 'labels' and 'index'/'columns'")
            axis_name = self._get_axis_name(axis)
            axes = {axis_name: labels}
        elif index is not None or columns is not None:
            if axis == 1 and index is not None:
                raise ValueError("Cannot specify both 'axis' and 'index'")
            axes = {"index": index}
            if self.ndim == 2:
                axes["columns"] = columns
        else:
            raise ValueError(
                "Need to specify at least one of 'labels', 'index' or 'columns'"
            )

        obj = self

        for axis, labels in axes.items():
            if labels is not None:
                obj = obj._drop_axis(labels, axis, level=level, errors=errors)

        if inplace:
            self._update_inplace(obj)
            return None
        else:
            return obj

    @final
    def _drop_axis(
        self,
        labels,

Review comment (suggestion):
You should be able to just check for `axis == 1` at this point, since this is the portion of the code that will end up ignoring the `axes` argument.

Code after:
        columns: IndexLabel | ListLike = ...,
        level: Level | None = ...,
        inplace: bool = ...,
        errors: IgnoreRaise = ...,
    ) -> Self | None: ...

    def drop(
        self,
        labels: IndexLabel | ListLike = None,
        *,
        axis: Axis = 0,
        index: IndexLabel | ListLike = None,
        columns: IndexLabel | ListLike = None,
        level: Level | None = None,
        inplace: bool = False,
        errors: IgnoreRaise = "raise",
    ) -> Self | None:
        inplace = validate_bool_kwarg(inplace, "inplace")

        if labels is not None:
            if index is not None or columns is not None:
                raise ValueError("Cannot specify both 'labels' and 'index'/'columns'")
            axis_name = self._get_axis_name(axis)
            axes = {axis_name: labels}
        elif index is not None or columns is not None:
            if axis == 1:
                raise ValueError("Cannot specify both 'axis' and 'index'/'columns'")
            axes = {"index": index}
            if self.ndim == 2:
                axes["columns"] = columns
        else:
            raise ValueError(
                "Need to specify at least one of 'labels', 'index' or 'columns'"
            )

        obj = self

        for axis, labels in axes.items():
            if labels is not None:
                obj = obj._drop_axis(labels, axis, level=level, errors=errors)

        if inplace:
            self._update_inplace(obj)
            return None
        else:
            return obj

    @final
    def _drop_axis(
        self,
        labels,