Learn of dictionary,
simple example of dictionary in  “Simple Python tutorial"
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#!/usr/bin/python# Filename:dictionary.py# ‘ab‘ is short for ‘a‘ddress‘b‘ookab = { ‘Swaroop‘ : ‘swaroop@byteofpython.info‘,        ‘Larry‘  : ‘larry@wall.org‘,        ‘Matsumoto‘ : ‘matz@ruby-lang.org‘,        ‘Spammer‘ : ‘spammer@hotmail.com‘  }print "Swaroop‘s address is %s" %ab[‘Swaroop‘]# delete a key->value pairdel ab[‘Spammer‘] print ‘\nThere are %d contacts in the address-book\n‘ %len(ab)for name,address in ab.items():        print ‘Contact %s at %s‘ %(name,address)    if ‘Guido‘ in ab:     print "\nGuido‘s address is %s" %ab[‘Guido‘]if ab.has_key(‘Larry‘):    print "\nLarry‘s address is %s" %ab[‘Larry‘]