# create a mapping of state to abbreviation
states = {
    'Kyungsangdo': 'KS',
    'Kangwondo': 'KW',
    'Jeju': 'JE',
    'Junlado': 'JL',
    'Chungchungdo': 'CC'
}

# create a basic set of states and some cities in them
cities = {
    'KS': 'Busan',
    'JE': 'Jejusi',
    'JL': 'Mokpo'
}

# add some more cities
cities['KW'] = 'Sokcho'
cities['CC'] = 'Chungju'

# print out some cities
print('-' * 10)
print("KS State has: ", cities['KS'])
print("KW State has: ", cities['KW'])

# print some states
print('-' * 10)
print("Kyungsangdo's abbreviation is: ", states['Kyungsangdo'])
print("Kangwondo's abbreviation is: ", states['Kangwondo'])

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

# print every state abbreviation
print('-' * 10)
for state, abbrev in list(states.items()):
    print(f"{state} is abbreviated {abbrev}")

# print every city in state
print('-' * 10)
for abbrev, city in list(cities.items()):
    print(f"{abbrev} has the city {city}")


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


print('-' * 10)
# safely get a abbreviation by state that might not be there
state = states.get('Texas')

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

# get a city with a default value
city = cities.get('TX', 'Does Not Exist')
print(f"The city for the state 'TX' is: {city}")