python timeit on a function code example

Example 1: time it python

import time

start = time.time()
print("hello")
end = time.time()
print(end - start)

Example 2: how to use timeit in python 3

import timeit
import_module = "import random"
testcode = ''' 
def test(): 
    return random.randint(10, 100)
'''
print(timeit.repeat(stmt=testcode, setup=import_module))

Example 3: timeit command line

# Timeit can't be used for whole file using command line...
# You can only test python snippets using command line