Fixed a bug in _parse_boundary_labels where boundary_labels was overwritten by None
@@ -188,7 +188,6 @@ def _parse_pad_width(pad_width, shape):
def _parse_boundary_labels(boundary_labels, pad_width):
r"""
"""
- boundary_labels = None
if boundary_labels is None:
boundary_labels = [['left', 'right'],
['front', 'back'],
