>>> from typing import *
>>> get_args(Callable)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/serhiy/py/cpython/Lib/typing.py", line 1412, in get_args
    if get_origin(tp) is collections.abc.Callable and res[0] is not Ellipsis:
IndexError: tuple index out of range

What is the correct behavior?