make NXtomoextend __str__
Traceback (most recent call last): File "edit_nx_tomo.py", line 4, in print(nx_tomo) TypeError: str returned non-string (type NoneType)
Traceback (most recent call last): File "edit_nx_tomo.py", line 4, in print(nx_tomo) TypeError: str returned non-string (type NoneType)