>>> import importlib.util>>> importlib.util.resolve_name(".submodule", None)Traceback (most recent call last):  File "<stdin>", line 1, in <module>  File "/home/proj/python/cpython/Lib/importlib/util.py", line 26, in resolve_name    '(no leading dot)'.format(name))ValueError: '.submodule' is not a relative name (no leading dot)This message sounds like nonsense. Perhaps the it should say something like:    '.submodule' should be an absolute name (no leading dot)or:    relative import of '.submodule' not allowed outside of a package