how to call a file from another file in python code example

Example 1: run py file in another py file

os.system('python my_file.py')

Example 2: python use functions from another file

#If you want to import all functions from file... but you will still need to
#mention the file name:
import pizza
pizza.pizza_function()

#If you want to import every function but you dont want to mention file name:
from pizza import *
pizza.pizza_function()