Solutions - Chapter 6

person = {
    'first_name': 'eric',
    'last_name': 'matthes',
    'age': 43,
    'city': 'sitka',
    }

print(person['first_name'])
print(person['last_name'])
print(person['age'])
print(person['city'])

favorite_numbers = {
    'mandy': 42,
    'micah': 23,
    'gus': 7,
    'hank': 1000_000,
    'maggie': 0,
    }

num = favorite_numbers['mandy']
print(f"Mandy's favorite number is {num}.")

num = favorite_numbers['micah']
print(f"Micah's favorite number is {num}.")

num = favorite_numbers['gus']
print(f"Gus's favorite number is {num}.")

num = favorite_numbers['hank']
print(f"Hank's favorite number is {num}.")

num = favorite_numbers['maggie']
print(f"Maggie's favorite number is {num}.")

glossary = {
    'string': 'A series of characters.',
    'comment': 'A note in a program that the Python interpreter ignores.',
    'list': 'A collection of items in a particular order.',
    'loop': 'Work through a collection of items, one at a time.',
    'dictionary': "A collection of key-value pairs.",
    }

word = 'string'
print(f"\n{word.title()}: {glossary[word]}")

word = 'comment'
print(f"\n{word.title()}: {glossary[word]}")

word = 'list'
print(f"\n{word.title()}: {glossary[word]}")

word = 'loop'
print(f"\n{word.title()}: {glossary[word]}")

word = 'dictionary'
print(f"\n{word.title()}: {glossary[word]}")

glossary = {
    'string': 'A series of characters.',
    'comment': 'A note in a program that the Python interpreter ignores.',
    'list': 'A collection of items in a particular order.',
    'loop': 'Work through a collection of items, one at a time.',
    'dictionary': "A collection of key-value pairs.",
    'key': 'The first item in a key-value pair in a dictionary.',
    'value': 'An item associated with a key in a dictionary.',
    'conditional test': 'A comparison between two values.',
    'float': 'A numerical value with a decimal component.',
    'boolean expression': 'An expression that evaluates to True or False.',
    }

for word, definition in glossary.items():
    print(f"\n{word.title()}: {definition}")

rivers = {
    'nile': 'egypt',
    'mississippi': 'united states',
    'fraser': 'canada',
    'kuskokwim': 'alaska',
    'yangtze': 'china',
    }

for river, country in rivers.items():
    print(f"The {river.title()} flows through {country.title()}.")

print("\nThe following rivers are included in this data set:")
for river in rivers.keys():
    print(f"- {river.title()}")

print("\nThe following countries are included in this data set:")
for country in rivers.values():
    print(f"- {country.title()}")

favorite_languages = {
    'jen': 'python',
    'sarah': 'c',
    'edward': 'ruby',
    'phil': 'python',
    }

for name, language in favorite_languages.items():
    print(f"{name.title()}'s favorite language is {language.title()}.")

print("\n")

coders = ['phil', 'josh', 'david', 'becca', 'sarah', 'matt', 'danielle']
for coder in coders:
    if coder in favorite_languages.keys():
        print(f"Thank you for taking the poll, {coder.title()}!")
    else:
        print(f"{coder.title()}, what's your favorite programming language?")

# Make an empty list to store people in.
people = []

# Define some people, and add them to the list.
person = {
    'first_name': 'eric',
    'last_name': 'matthes',
    'age': 46,
    'city': 'sitka',
    }
people.append(person)

person = {
    'first_name': 'lemmy',
    'last_name': 'matthes',
    'age': 2,
    'city': 'sitka',
    }
people.append(person)

person = {
    'first_name': 'willie',
    'last_name': 'matthes',
    'age': 11,
    'city': 'sitka',
    }
people.append(person)

# Display all of the information in the dictionary.
for person in people:
    name = f"{person['first_name'].title()} {person['last_name'].title()}"
    age = person['age']
    city = person['city'].title()
    
    print(f"{name}, of {city}, is {age} years old.")

# Make an empty list to store the pets in.
pets = []

# Make individual pets, and store each one in the list.
pet = {
    'animal type': 'python',
    'name': 'john',
    'owner': 'guido',
    'weight': 43,
    'eats': 'bugs',
}
pets.append(pet)

pet = {
    'animal type': 'chicken',
    'name': 'clarence',
    'owner': 'tiffany',
    'weight': 2,
    'eats': 'seeds',
}
pets.append(pet)

pet = {
    'animal type': 'dog',
    'name': 'peso',
    'owner': 'eric',
    'weight': 37,
    'eats': 'shoes',
}
pets.append(pet)

# Display information about each pet.
for pet in pets:
    print(f"\nHere's what I know about {pet['name'].title()}:")
    for key, value in pet.items():
        print(f"\t{key}: {value}")

favorite_places = {
    'eric': ['bear mountain', 'death valley', 'tierra del fuego'],
    'erin': ['hawaii', 'iceland'],
    'willie': ['mt. verstovia', 'the playground', 'new hampshire']
    }

for name, places in favorite_places.items():
    print(f"\n{name.title()} likes the following places:")
    for place in places:
        print(f"- {place.title()}")

favorite_numbers = {
    'mandy': [42, 17],
    'micah': [42, 39, 56],
    'gus': [7, 12],
    }

for name, numbers in favorite_numbers.items():
    print(f"\n{name.title()} likes the following numbers:")
    for number in numbers:
        print(f"  {number}")

cities = {
    'santiago': {
        'country': 'chile',
        'population': 6_310_000,
        'nearby mountains': 'andes',
        },
    'talkeetna': {
        'country': 'united states',
        'population': 876,
        'nearby mountains': 'alaska range',
        },
    'kathmandu': {
        'country': 'nepal',
        'population': 975_453,
        'nearby mountains': 'himilaya',
        }
    }

for city, city_info in cities.items():
    country = city_info['country'].title()
    population = city_info['population']
    mountains = city_info['nearby mountains'].title()

    print(f"\n{city.title()} is in {country}.")
    print(f"  It has a population of about {population}.")
    print(f"  The {mountains} mounats are nearby.")