Time adding 1 million integers together. Run 1000 times and output average time.

million_adds.py

import time

def exp():
    adder = 0
    start = time.time()
    for i in range(1000000):
      adder += 1
    end = time.time()
    return (end - start)

def main():
    times = []
    for i in range(1000):
        times.append(exp())
    print(sum(times) / float(len(times)))

if __name__ == "__main__":
    main()

0.002358353853225708s on Dell Vostro 5502