Function _block_setup

numpy/_core/shape_base.py:954–966

Returns (`arrays`, list_ndim, result_ndim, final_size)

(arrays)

# or `_block_concatenate` without blocking large arrays to force the wisdom
# to trigger the desired path.
def _block_setup(arrays):
    """
    Returns
    (`arrays`, list_ndim, result_ndim, final_size)
    """
    bottom_index, arr_ndim, final_size = _block_check_depths_match(arrays)
    list_ndim = len(bottom_index)
    if bottom_index and bottom_index[-1] is None:
        raise ValueError(
            f'List at {_block_format_index(bottom_index)} cannot be empty'
        )
    result_ndim = max(arr_ndim, list_ndim)
    return arrays, list_ndim, result_ndim, final_size


def _block_slicing(arrays, list_ndim, result_ndim):