1 # create a mapping of state to abbreviation 2 states = { 3     ‘Oregon‘: ‘OR‘, 4     ‘Florida‘: ‘FL‘, 5     ‘California‘: ‘CA‘, 6     ‘Michigan‘: ‘MI‘ 7 } 8  9 # create a basic set of states and some cities in them10 cities = {11     ‘CA‘: ‘San Francisco‘,12     ‘MI‘: ‘Detroit‘,13     ‘FL‘: ‘Jacksonville‘14 }15 16 # add some more cities17 cities[‘NY‘] = ‘New York‘18 cities[‘OR‘] = ‘Portland‘19 20 # print out some cities21 print ‘-‘ * 1022 print "NY State has: ", cities[‘NY‘]23 print "OR State has: ", cities[‘OR‘]24 25 # print some states26 print ‘-‘*1027 print "Michigan‘s abbreviation is: ", states[‘Michigan‘]28 print "Florida‘s abbreviation is: ", states[‘Florida‘]29 30 # do it by using the state then cities dict31 print ‘-‘*1032 print "Michigan has: ", cities[states[‘Michigan‘]]33 print "Florida has: ", cities[states[‘Florida‘]]34 35 # print every state abbreviation36 print ‘-‘*1037 for state, abbrev in states.items():38     print "%s is abbreviated %s" % (state, abbrev)39 40 # print every city in state   (why not sequence)41 print ‘-‘*1042 for abbrev, city in cities.items():43     print "%s has the city %s" % (abbrev, city)44 45 # now do both at the same time46 print ‘-‘*1047 for state, abbrev in states.items():48     print "%s state is abbreviated %s and has city %s" % (49         state, abbrev, cities[abbrev])50 51 print ‘-‘*1052 # safely get a abbreviation by state that might not be there53 state = states.get(‘Texas‘, None)54 55 if not state:56     print "Sorry, no Texas."57 58 # get a city with a default value59 city = cities.get(‘TX‘, ‘Does Not Exist‘)60 print "The city for the state ‘TX‘ is: %s" % city