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ex39.py

 1 # create a mapping of state to abbreviation
 2 states = {
 3     Oregon: OR,
 4     Florida: FL,
 5     California: CA,
 6     New York: NY,
 7     Michigan: MI
 8 }
 9 
10 #ctrat a basic set of states and some cities in them
11 cities = {
12     CA: San Francisco,
13     MI: Detroit,
14     FL: Jacksonville
15 }
16 
17 #add some more cities
18 
19 cities[NY] = New York
20 cities[OR] = Portland
21 
22 #Print out some cities
23 print (- * 10)
24 print ("NY State has: ", cities[NY])
25 print ("OR state has: ", cities[OR])
26 
27 #print some state
28 print (- * 10)
29 print ("Florida‘s abbreviation is: ", states[Florida])
30 print ("Michigan‘s abbreviation is: ", states[Michigan])
31 
32 #do it by using the state then cities dict
33 print (- * 10)
34 print ("Michigan has: ", cities[states[Michigan]])
35 print ("Florida has: ",cities[states[Florida]])
36 
37 #print every city in state
38 print (- * 10)
39 for abbrev, city in cities.items():
40     print ("%s has the city %s" % (
41         abbrev,city))
42 
43 # now do both at the same time
44 print (- * 10)
45 for state, abbrev in states.items():
46     print ("%s state is abbreviated %s and has city %s." %(
47         state,abbrev,cities[abbrev]))
48 
49 if not state:
50     print ("Sorry, no Texas.")
51 
52 # get a city with a default value
53 city = cities.get(TX, Does NOT Exist)
54 print ("The city for the state ‘TX‘ is:%s" % city)

 

ex39.py