'cli2 help datetime.datetime' raises error
> cli2 help datetime.datetime
File "/virtualenvs/kcl/src/cli2/cli2/introspection.py", line 53, in __get__
f'{inspect.signature(obj.target)}'
...
ValueError: no signature found for builtin type <class 'datetime.datetime'>
For Python builtin modules written in C, inspect
may not be able to return a signature.