ex39.py

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

#create 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 '_' * 10
print "NY State has: ", cities['NY']
print "OR State has: ", cities['OR']

print '_' * 10
print "Michigan's abbrevition is: ", states['Michigan']
print "Florida's abbreviation is: ", states['Florida']

print '_' * 10
print "Michigan has: ", cities[states['Michigan']]
print "Florida has: ", cities[states['Florida']]

print '_' * 10
for state, abbrev in states.items():
  print "%s is abbreviated %s" % (abbrev, state)
  
print '_' * 10
for state, abbrev in states.items():
  print "%s state is abbreviated %s and has city %s" % (state, abbrev, cities[abbrev])
  
print '_' * 10
state = states.get('Texas')
  
if not state:
  print "Sorry, no Texas."

city = cities.get('TX', 'Does Not Exist')
print "The city for the state 'TX' is : %s" % city