Measure the Running Time of a Piece of Code in Python (Timeit)

Timeit library give you the capability of measuring the run time of a piece of code or function. here is how to use it:

import timeit
start_time = timeit.default_timer()
# code you want to evaluate
print 'Hello world!'

elapsed = timeit.default_timer() - start_time

print 'Time:',elapesd

Here is the result:

Hello world!
Time: 4.19853863036e-05