I will suggest you use timeit.default_timer instead of timeit.timeit. timeit.default_timer provides the best clock available on your platform and version of Python automatically:-
from timeit import default_timer as timer
start = timer()
end = timer()
print(end - start)
# It will print Time in seconds, e.g. 5.38091952400282

The timeit.default_timer is assigned to time.time() or time.clock() depending on OS. On Python 3.3+ default_timer is time.perf_counter() on all platforms
To know more about this you can have a look at the following video:-