optimize your code using dictionary

Today, i was curious to know which method will search a key very fast in dictionary. So i wrote small script which gives me time of execution of some methods.

A programmer can really take advantage to optimize their programe using this script.

                        import os

                        import sys

                        import time

                        __doc__="""

                        benchmark script for dict method

                        """

                        a=range(10000)

                        b=range(9000,10000)

                        c=dict(zip(a,b))

                        t1 = time.time()

                        k = c.keys()

                        if 98 in k:

                            t2 = time.time()

                            print 'if 98 in c.keys() :',(t2-t1)*1000

                        t1 = time.time()

                        if c.has_key(98):

                            t2 = time.time()

                            print 'c.has_key(98) :',(t2-t1)*1000

                        t1 = time.time()

                        if 98 in c:

                            t2 = time.time()

                            print 'if 98 in c: ',(t2-t1)*1000