ex39.py

# create a mapping of state to abbreviation
states = {
    'Oregon': 'OR',
    'Florida': 'FL',
    'California': 'CA',
    'New York': 'NY',
    'Michigan': 'MI'
}

#ctrat a basic set of states and some cities in them
cities = {
    'CA': 'San Francisco',
    'MI': 'Detroit',
    'FL': 'Jacksonville'
}

#add some more cities

cities['NY'] = 'New York'
cities['OR'] = 'Portland'

#Print out some cities
print ('-' * 10)
print ("NY State has: ", cities['NY'])
print ("OR state has: ", cities['OR'])

#print some state
print ('-' * 10)
print ("Florida's abbreviation is: ", states['Florida'])
print ("Michigan's abbreviation is: ", states['Michigan'])

#do it by using the state then cities dict
print ('-' * 10)
print ("Michigan has: ", cities[states['Michigan']])
print ("Florida has: ",cities[states['Florida']])

#print every city in state
print ('-' * 10)
for abbrev, city in cities.items():
    print ("%s has the city %s" % (
        abbrev,city))

# now do both at the same time
print ('-' * 10)
for state, abbrev in states.items():
    print ("%s state is abbreviated %s and has city %s." %(
        state,abbrev,cities[abbrev]))

if not state:
    print ("Sorry, no Texas.")

# get a city with a default value
city = cities.get('TX', 'Does NOT Exist')
print ("The city for the state 'TX' is:%s" % city)