How to use timeit when timing a function

Question

Let me start off by saying I know almost nothing about python but have to write a program in three different languages (already done in java and c++).

I need to be a

Answer 1

if you want something simpler

import time
startMillis = int(round(time.time() * 1000))
print startMillis
time.sleep(5) # this is your function that takes time to execute
endMillis = int(round(time.time() * 1000))
print endMillis

timeTaken = endMillis - startMillis