Method _get_axis_number

pandas/core/generic.py:521–527

(cls, axis: Axis)

    @final
    @classmethod
    def _get_axis_number(cls, axis: Axis) -> AxisInt:
        try:
            return cls._AXIS_TO_AXIS_NUMBER[axis]
        except KeyError as err:
            raise ValueError(
                f"No axis named {axis} for object type {cls.__name__}"
            ) from err

    @final
    @classmethod