How to recall function in .py file from notebook of Jupyter

Question

I have a .py file defining some functions(or methods). How to recall those functions from notebook of Jupyter.

Answer 1

I think it may be like that:

 from name_file.py import name_function

(now I can use name_fuction function)

or for all functions:

import name_file.py

(now I can use name_file.name_fuction function)