Method arange_result

pandas/core/reshape/reshape.py:246–251

(self)

    @cache_readonly
    def arange_result(self) -> tuple[npt.NDArray[np.intp], npt.NDArray[np.bool_]]:
        # We cache this for reuse in ExtensionBlock._unstack
        dummy_arr = np.arange(len(self.index), dtype=np.intp)
        new_values, mask = self.get_new_values(dummy_arr, fill_value=-1)
        return new_values, mask.any(0)
        # TODO: in all tests we have mask.any(0).all(); can we rely on that?

    def get_result(self, obj, value_columns, fill_value) -> DataFrame:
        values = obj._values