Traceback (most recent call last):
...
File "/.../python3.5/site-packages/tsukkomi/typed.py", line 204, in decorator
check_return(call_.__name__, result, hints)
File "/.../python3.5/site-packages/tsukkomi/typed.py", line 61, in check_return
_, correct = check_type(r, hints['return'])
File "/.../python3.5/site-packages/tsukkomi/typed.py", line 36, in check_type
elif issubclass(hint, typing.Callable):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/typing.py", line 831, in __subclasscheck__
return super().__subclasscheck__(cls)
TypeError: issubclass() arg 1 must be a class