how to use functions from another file in python

from otherPyFileName import function1, function2

out1 = function1(3)
out2 = function2(3)


print(out1, out2)

output ---> WhatEver ftn returns

#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()

from file.py import function(a,b)