func.py

>>> def add_one(x):
...   return x + 1
... 
>>> dir(add_one)
['__annotations__', '__builtins__', '__call__', '__class__', '__closure__', '__code__', 
'__defaults__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', 
'__ge__', '__get__', '__getattribute__', '__globals__', '__gt__', '__hash__', '__init__', 
'__init_subclass__', '__kwdefaults__', '__le__', '__lt__', '__module__', '__name__', '__ne__', 
'__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', 
'__str__', '__subclasshook__']
>>> add_one.__name__
'add_one'
>>> add_one.__class__
<class 'function'>