Added solutions documents for ease of reference

pcc-solutions/.gitignore

@@ -0,0 +1,12 @@
+.DS_Store
+
+__pycache__/
+*.pyc
+
+*_env/
+.venv*/
+
+online_resources_site/site/
+
+*.sqlite3
+

pcc-solutions/README.md

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+Python Crash Course - Third Edition
+===
+
+A Hands-On, Project-Based Introduction to Programming
+---
+
+This is a collection of resources for [Python Crash Course, Third Edition](https://nostarch.com/python-crash-course-3rd-edition), an introductory programming book from [No Starch Press](https://nostarch.com) by Eric Matthes. Click here for a [much cleaner version](https://ehmatthes.github.io/pcc_3e/) of these online resources.
+
+If you have any questions about Python Crash Course, feel free to get in touch:
+
+Email: ehmatthes@gmail.com
+
+Twitter: [@ehmatthes](http://twitter.com/ehmatthes/)

pcc-solutions/chapter_01/hello_world.py

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+print("Hello Python world!")

pcc-solutions/chapter_02/apostrophe.py

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+message = "One of Python's strengths is its diverse community."
+print(message)

pcc-solutions/chapter_02/comment.py

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+# Say hello to everyone.
+print("Hello Python people!")

pcc-solutions/chapter_02/full_name.py

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+first_name = "ada"
+last_name = "lovelace"
+full_name = f"{first_name} {last_name}"
+print(full_name)

pcc-solutions/chapter_02/full_name_2.py

@@ -0,0 +1,4 @@
+first_name = "ada"
+last_name = "lovelace"
+full_name = f"{first_name} {last_name}"
+print(f"Hello, {full_name.title()}!")

pcc-solutions/chapter_02/full_name_3.py

@@ -0,0 +1,5 @@
+first_name = "ada"
+last_name = "lovelace"
+full_name = f"{first_name} {last_name}"
+message = f"Hello, {full_name.title()}!"
+print(message)

pcc-solutions/chapter_02/hello_world.py

@@ -0,0 +1,2 @@
+message = "Hello Python world!"
+print(message)

pcc-solutions/chapter_02/hello_world_variables.py

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+message = "Hello Python world!"
+print(message)

pcc-solutions/chapter_02/hello_world_variables_2.py

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+message = "Hello Python world!"
+print(message)
+
+message = "Hello Python Crash Course world!"
+print(message)

pcc-solutions/chapter_02/name.py

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+name = "ada lovelace"
+print(name.title())

pcc-solutions/chapter_02/name_2.py

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+name = "Ada Lovelace"
+print(name.upper())
+print(name.lower())

pcc-solutions/chapter_03/bicycles.py

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+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+message = f"My first bicycle was a {bicycles[0].title()}."
+
+print(message)

pcc-solutions/chapter_03/cars.py

@@ -0,0 +1,5 @@
+cars = ['bmw', 'audi', 'toyota', 'subaru']
+print(cars)
+
+cars.reverse()
+print(cars)

pcc-solutions/chapter_03/motorcycles.py

@@ -0,0 +1,7 @@
+motorcycles = ['honda', 'yamaha', 'suzuki', 'ducati']
+print(motorcycles)
+
+too_expensive = 'ducati'
+motorcycles.remove(too_expensive)
+print(motorcycles)
+print(f"\nA {too_expensive.title()} is too expensive for me.")

pcc-solutions/chapter_03/partial_programs/bicycles_0_first_version.py

@@ -0,0 +1,2 @@
+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+print(bicycles)

pcc-solutions/chapter_03/partial_programs/bicycles_1_accessing_elements.py

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+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+print(bicycles[0])

pcc-solutions/chapter_03/partial_programs/bicycles_2_using_methods.py

@@ -0,0 +1,2 @@
+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+print(bicycles[0].title())

pcc-solutions/chapter_03/partial_programs/bicycles_3_index_1_3.py

@@ -0,0 +1,3 @@
+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+print(bicycles[1])
+print(bicycles[3])

pcc-solutions/chapter_03/partial_programs/bicycles_4_last_item.py

@@ -0,0 +1,2 @@
+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+print(bicycles[-1])

pcc-solutions/chapter_03/partial_programs/bicycles_5_message.py

@@ -0,0 +1,4 @@
+bicycles = ['trek', 'cannondale', 'redline', 'specialized']
+message = f"My first bicycle was a {bicycles[0].title()}."
+
+print(message)

pcc-solutions/chapter_03/partial_programs/cars_0_first_version.py

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+cars = ['bmw', 'audi', 'toyota', 'subaru']
+cars.sort()
+print(cars)

pcc-solutions/chapter_03/partial_programs/cars_1_sort_reverse.py

@@ -0,0 +1,3 @@
+cars = ['bmw', 'audi', 'toyota', 'subaru']
+cars.sort(reverse=True)
+print(cars)

pcc-solutions/chapter_03/partial_programs/cars_2_sorted.py

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+cars = ['bmw', 'audi', 'toyota', 'subaru']
+
+print("Here is the original list:")
+print(cars)
+
+print("\nHere is the sorted list:")
+print(sorted(cars))
+
+print("\nHere is the original list again:")
+print(cars)

pcc-solutions/chapter_03/partial_programs/cars_3_reverse_order.py

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+cars = ['bmw', 'audi', 'toyota', 'subaru']
+print(cars)
+
+cars.reverse()
+print(cars)

pcc-solutions/chapter_03/partial_programs/motorcycles_0_first_version.py

@@ -0,0 +1,5 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles)
+
+motorcycles[0] = 'ducati'
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_10_use_value.py

@@ -0,0 +1,7 @@
+motorcycles = ['honda', 'yamaha', 'suzuki', 'ducati']
+print(motorcycles)
+
+too_expensive = 'ducati'
+motorcycles.remove(too_expensive)
+print(motorcycles)
+print(f"\nA {too_expensive.title()} is too expensive for me.")

pcc-solutions/chapter_03/partial_programs/motorcycles_11_index_error.py

@@ -0,0 +1,2 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles[3])

pcc-solutions/chapter_03/partial_programs/motorcycles_1_appending.py

@@ -0,0 +1,5 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles)
+
+motorcycles.append('ducati')
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_2_starting_empty.py

@@ -0,0 +1,7 @@
+motorcycles = []
+
+motorcycles.append('honda')
+motorcycles.append('yamaha')
+motorcycles.append('suzuki')
+
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_3_inserting_elements.py

@@ -0,0 +1,4 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+
+motorcycles.insert(0, 'ducati')
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_4_removing_elements.py

@@ -0,0 +1,5 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles)
+
+del motorcycles[0]
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_5_remove_second_item.py

@@ -0,0 +1,5 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles)
+
+del motorcycles[1]
+print(motorcycles)

pcc-solutions/chapter_03/partial_programs/motorcycles_6_pop.py

@@ -0,0 +1,6 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+print(motorcycles)
+
+popped_motorcycle = motorcycles.pop()
+print(motorcycles)
+print(popped_motorcycle)

pcc-solutions/chapter_03/partial_programs/motorcycles_7_use_popped_value.py

@@ -0,0 +1,4 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+
+last_owned = motorcycles.pop()
+print(f"The last motorcycle I owned was a {last_owned.title()}.")

pcc-solutions/chapter_03/partial_programs/motorcycles_8_popping_first_item.py

@@ -0,0 +1,4 @@
+motorcycles = ['honda', 'yamaha', 'suzuki']
+
+first_owned = motorcycles.pop(0)
+print(f"The first motorcycle I owned was a {first_owned.title()}.")

pcc-solutions/chapter_03/partial_programs/motorcycles_9_removing_item_by_value.py

@@ -0,0 +1,5 @@
+motorcycles = ['honda', 'yamaha', 'suzuki', 'ducati']
+print(motorcycles)
+
+motorcycles.remove('ducati')
+print(motorcycles)

pcc-solutions/chapter_04/dimensions.py

@@ -0,0 +1,9 @@
+dimensions = (200, 50)
+print("Original dimensions:")
+for dimension in dimensions:
+    print(dimension)
+
+dimensions = (400, 100)
+print("\nModified dimensions:")
+for dimension in dimensions:
+    print(dimension)

pcc-solutions/chapter_04/even_numbers.py

@@ -0,0 +1,2 @@
+even_numbers = list(range(2, 11, 2))
+print(even_numbers)

pcc-solutions/chapter_04/first_numbers.py

@@ -0,0 +1,2 @@
+numbers = list(range(1, 6))
+print(numbers)

pcc-solutions/chapter_04/foods.py

@@ -0,0 +1,11 @@
+my_foods = ['pizza', 'falafel', 'carrot cake']
+friend_foods = my_foods[:]
+
+my_foods.append('cannoli')
+friend_foods.append('ice cream')
+
+print("My favorite foods are:")
+print(my_foods)
+
+print("\nMy friend's favorite foods are:")
+print(friend_foods)

pcc-solutions/chapter_04/magicians.py

@@ -0,0 +1,6 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")
+    print(f"I can't wait to see your next trick, {magician.title()}.\n")
+
+print("Thank you, everyone. That was a great magic show!")

pcc-solutions/chapter_04/partial_programs/dimensions_0_first_version.py

@@ -0,0 +1,3 @@
+dimensions = (200, 50)
+print(dimensions[0])
+print(dimensions[1])

pcc-solutions/chapter_04/partial_programs/dimensions_1_error_change_value.py

@@ -0,0 +1,2 @@
+dimensions = (200, 50)
+dimensions[0] = 250

pcc-solutions/chapter_04/partial_programs/dimensions_2_looping.py

@@ -0,0 +1,3 @@
+dimensions = (200, 50)
+for dimension in dimensions:
+    print(dimension)

pcc-solutions/chapter_04/partial_programs/dimensions_3_writing_over_tuple.py

@@ -0,0 +1,9 @@
+dimensions = (200, 50)
+print("Original dimensions:")
+for dimension in dimensions:
+    print(dimension)
+
+dimensions = (400, 100)
+print("\nModified dimensions:")
+for dimension in dimensions:
+    print(dimension)

pcc-solutions/chapter_04/partial_programs/even_numbers.py

@@ -0,0 +1,2 @@
+even_numbers = list(range(2, 11, 2))
+print(even_numbers)

pcc-solutions/chapter_04/partial_programs/first_numbers_0_first_version.py

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+for value in range(1, 5):
+    print(value)

pcc-solutions/chapter_04/partial_programs/first_numbers_1_one_to_five.py

@@ -0,0 +1,2 @@
+for value in range(1, 6):
+    print(value)

pcc-solutions/chapter_04/partial_programs/first_numbers_2_list_of_numbers.py

@@ -0,0 +1,2 @@
+numbers = list(range(1, 6))
+print(numbers)

pcc-solutions/chapter_04/partial_programs/foods_0_first_version.py

@@ -0,0 +1,8 @@
+my_foods = ['pizza', 'falafel', 'carrot cake']
+friend_foods = my_foods[:]
+
+print("My favorite foods are:")
+print(my_foods)
+
+print("\nMy friend's favorite foods are:")
+print(friend_foods)

pcc-solutions/chapter_04/partial_programs/foods_1_new_foods.py

@@ -0,0 +1,11 @@
+my_foods = ['pizza', 'falafel', 'carrot cake']
+friend_foods = my_foods[:]
+
+my_foods.append('cannoli')
+friend_foods.append('ice cream')
+
+print("My favorite foods are:")
+print(my_foods)
+
+print("\nMy friend's favorite foods are:")
+print(friend_foods)

pcc-solutions/chapter_04/partial_programs/foods_2_incorrect_approach.py

@@ -0,0 +1,13 @@
+my_foods = ['pizza', 'falafel', 'carrot cake']
+
+# This doesn't work:
+friend_foods = my_foods
+
+my_foods.append('cannoli')
+friend_foods.append('ice cream')
+
+print("My favorite foods are:")
+print(my_foods)
+
+print("\nMy friend's favorite foods are:")
+print(friend_foods)

pcc-solutions/chapter_04/partial_programs/hello_world_0_errors_indenting_unnecessarily.py

@@ -0,0 +1,2 @@
+message = "Hello Python world!"
+    print(message)

pcc-solutions/chapter_04/partial_programs/magicians_0_first_version.py

@@ -0,0 +1,3 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(magician)

pcc-solutions/chapter_04/partial_programs/magicians_1_great_trick.py

@@ -0,0 +1,3 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")

pcc-solutions/chapter_04/partial_programs/magicians_2_next_trick.py

@@ -0,0 +1,4 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")
+    print(f"I can't wait to see your next trick, {magician.title()}.\n")

pcc-solutions/chapter_04/partial_programs/magicians_3_great_show.py

@@ -0,0 +1,6 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")
+    print(f"I can't wait to see your next trick, {magician.title()}.\n")
+
+print("Thank you, everyone. That was a great magic show!")

pcc-solutions/chapter_04/partial_programs/magicians_4_errors_forgetting_to_indent.py

@@ -0,0 +1,3 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+print(magician)

pcc-solutions/chapter_04/partial_programs/magicians_5_errors_forgetting_to_indent_additional_lines.py

@@ -0,0 +1,4 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")
+print(f"I can't wait to see your next trick, {magician.title()}.\n")

pcc-solutions/chapter_04/partial_programs/magicians_6_errors_indenting_unnecessarily_after_loop.py

@@ -0,0 +1,6 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians:
+    print(f"{magician.title()}, that was a great trick!")
+    print(f"I can't wait to see your next trick, {magician.title()}.\n")
+    
+    print("Thank you everyone, that was a great magic show!")

pcc-solutions/chapter_04/partial_programs/magicians_7_errors_forgetting_colon.py

@@ -0,0 +1,3 @@
+magicians = ['alice', 'david', 'carolina']
+for magician in magicians
+    print(magician)

pcc-solutions/chapter_04/partial_programs/players_0_first_version.py

@@ -0,0 +1,2 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+print(players[0:3])

pcc-solutions/chapter_04/partial_programs/players_1_second_to_fourth.py

@@ -0,0 +1,2 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+print(players[1:4])

pcc-solutions/chapter_04/partial_programs/players_2_omit_first_index.py

@@ -0,0 +1,2 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+print(players[:4])

pcc-solutions/chapter_04/partial_programs/players_3_omit_last_index.py

@@ -0,0 +1,2 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+print(players[2:])

pcc-solutions/chapter_04/partial_programs/players_4_negative_first_index.py

@@ -0,0 +1,2 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+print(players[-3:])

pcc-solutions/chapter_04/partial_programs/players_5_looping_through_slice.py

@@ -0,0 +1,5 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+
+print("Here are the first three players on my team:")
+for player in players[:3]:
+    print(player.title())

pcc-solutions/chapter_04/partial_programs/square_numbers_0_first_version.py

@@ -0,0 +1,6 @@
+squares = []
+for value in range(1, 11):
+    square = value ** 2
+    squares.append(square)
+
+print(squares)

pcc-solutions/chapter_04/partial_programs/square_numbers_1_shorter_loop.py

@@ -0,0 +1,5 @@
+squares = []
+for value in range(1, 11):
+    squares.append(value**2)
+
+print(squares)

pcc-solutions/chapter_04/partial_programs/squares.py

@@ -0,0 +1,2 @@
+squares = [value**2 for value in range(1, 11)]
+print(squares)

pcc-solutions/chapter_04/players.py

@@ -0,0 +1,5 @@
+players = ['charles', 'martina', 'michael', 'florence', 'eli']
+
+print("Here are the first three players on my team:")
+for player in players[:3]:
+    print(player.title())

pcc-solutions/chapter_04/square_numbers.py

@@ -0,0 +1,5 @@
+squares = []
+for value in range(1, 11):
+    squares.append(value**2)
+
+print(squares)

pcc-solutions/chapter_04/squares.py

@@ -0,0 +1,2 @@
+squares = [value**2 for value in range(1, 11)]
+print(squares)

pcc-solutions/chapter_05/amusement_park.py

@@ -0,0 +1,12 @@
+age = 12
+
+if age < 4:
+    price = 0
+elif age < 18:
+    price = 25
+elif age < 65:
+    price = 40
+elif age >= 65:
+    price = 20
+
+print(f"Your admission cost is ${price}.")

pcc-solutions/chapter_05/banned_users.py

@@ -0,0 +1,5 @@
+banned_users = ['andrew', 'carolina', 'david']
+user = 'marie'
+
+if user not in banned_users:
+    print(f"{user.title()}, you can post a response if you wish.")

pcc-solutions/chapter_05/cars.py

@@ -0,0 +1,7 @@
+cars = ['audi', 'bmw', 'subaru', 'toyota']
+
+for car in cars:
+    if car == 'bmw':
+        print(car.upper())
+    else:
+        print(car.title())

pcc-solutions/chapter_05/magic_number.py

@@ -0,0 +1,4 @@
+answer = 17
+
+if answer != 42:
+    print("That is not the correct answer. Please try again!")

pcc-solutions/chapter_05/partial_programs/amusement_park_0_first_version.py

@@ -0,0 +1,7 @@
+age = 12
+if age < 4:
+    print("Your admission cost is $0.")
+elif age < 18:
+    print("Your admission cost is $25.")
+else:
+    print("Your admission cost is $40.")

pcc-solutions/chapter_05/partial_programs/amusement_park_1_price_only.py

@@ -0,0 +1,10 @@
+age = 12
+
+if age < 4:
+    price = 0
+elif age < 18:
+    price = 25
+else:
+    price = 40
+
+print(f"Your admission cost is ${price}.")

pcc-solutions/chapter_05/partial_programs/amusement_park_2_multiple_elif.py

@@ -0,0 +1,12 @@
+age = 12
+
+if age < 4:
+    price = 0
+elif age < 18:
+    price = 25
+elif age < 65:
+    price = 40
+else:
+    price = 20
+
+print(f"Your admission cost is ${price}.")

pcc-solutions/chapter_05/partial_programs/amusement_park_3_omitting_else.py

@@ -0,0 +1,12 @@
+age = 12
+
+if age < 4:
+    price = 0
+elif age < 18:
+    price = 25
+elif age < 65:
+    price = 40
+elif age >= 65:
+    price = 20
+
+print(f"Your admission cost is ${price}.")

pcc-solutions/chapter_05/partial_programs/banned_users.py

@@ -0,0 +1,5 @@
+banned_users = ['andrew', 'carolina', 'david']
+user = 'marie'
+
+if user not in banned_users:
+    print(f"{user.title()}, you can post a response if you wish.")

pcc-solutions/chapter_05/partial_programs/cars.py

@@ -0,0 +1,7 @@
+cars = ['audi', 'bmw', 'subaru', 'toyota']
+
+for car in cars:
+    if car == 'bmw':
+        print(car.upper())
+    else:
+        print(car.title())

pcc-solutions/chapter_05/partial_programs/magic_number.py

@@ -0,0 +1,4 @@
+answer = 17
+
+if answer != 42:
+    print("That is not the correct answer. Please try again!")

pcc-solutions/chapter_05/partial_programs/toppings_0_first_listing.py

@@ -0,0 +1,4 @@
+requested_topping = 'mushrooms'
+
+if requested_topping != 'anchovies':
+    print("Hold the anchovies!")

pcc-solutions/chapter_05/partial_programs/toppings_1_multiple_conditions.py

@@ -0,0 +1,10 @@
+requested_toppings = ['mushrooms', 'extra cheese']
+
+if 'mushrooms' in requested_toppings:
+    print("Adding mushrooms.")
+if 'pepperoni' in requested_toppings:
+    print("Adding pepperoni.")
+if 'extra cheese' in requested_toppings:
+    print("Adding extra cheese.")
+    
+print("\nFinished making your pizza!")

pcc-solutions/chapter_05/partial_programs/toppings_2_checking_special_items.py

@@ -0,0 +1,6 @@
+requested_toppings = ['mushrooms', 'green peppers', 'extra cheese']
+
+for requested_topping in requested_toppings:
+    print(f"Adding {requested_topping}.")
+
+print("\nFinished making your pizza!")

pcc-solutions/chapter_05/partial_programs/toppings_3_no_green_peppers.py

@@ -0,0 +1,9 @@
+requested_toppings = ['mushrooms', 'green peppers', 'extra cheese']
+
+for requested_topping in requested_toppings:
+    if requested_topping == 'green peppers':
+        print("Sorry, we are out of green peppers right now.")
+    else:
+        print(f"Adding {requested_topping}.")
+
+print("\nFinished making your pizza!")

pcc-solutions/chapter_05/partial_programs/toppings_4_checking_list_not_empty.py

@@ -0,0 +1,8 @@
+requested_toppings = []
+
+if requested_toppings:
+    for requested_topping in requested_toppings:
+        print(f"Adding {requested_topping}.")
+    print("\nFinished making your pizza!")
+else:
+    print("Are you sure you want a plain pizza?")

pcc-solutions/chapter_05/partial_programs/toppings_5_multiple_lists.py

@@ -0,0 +1,12 @@
+available_toppings = ['mushrooms', 'olives', 'green peppers',
+                        'pepperoni', 'pineapple', 'extra cheese']
+
+requested_toppings = ['mushrooms', 'french fries', 'extra cheese']
+
+for requested_topping in requested_toppings:
+    if requested_topping in available_toppings:
+        print(f"Adding {requested_topping}.")
+    else:
+        print(f"Sorry, we don't have {requested_topping}.")
+        
+print("\nFinished making your pizza!")

pcc-solutions/chapter_05/partial_programs/voting_0_first_version.py

@@ -0,0 +1,3 @@
+age = 19
+if age >= 18:
+    print("You are old enough to vote!")

pcc-solutions/chapter_05/partial_programs/voting_1_two_lines.py

@@ -0,0 +1,4 @@
+age = 19
+if age >= 18:
+    print("You are old enough to vote!")
+    print("Have you registered to vote yet?")

pcc-solutions/chapter_05/partial_programs/voting_2_if_else.py

@@ -0,0 +1,7 @@
+age = 17
+if age >= 18:
+    print("You are old enough to vote!")
+    print("Have you registered to vote yet?")
+else:
+    print("Sorry, you are too young to vote.")
+    print("Please register to vote as soon as you turn 18!")

pcc-solutions/chapter_05/toppings.py

@@ -0,0 +1,12 @@
+available_toppings = ['mushrooms', 'olives', 'green peppers',
+                        'pepperoni', 'pineapple', 'extra cheese']
+
+requested_toppings = ['mushrooms', 'french fries', 'extra cheese']
+
+for requested_topping in requested_toppings:
+    if requested_topping in available_toppings:
+        print(f"Adding {requested_topping}.")
+    else:
+        print(f"Sorry, we don't have {requested_topping}.")
+        
+print("\nFinished making your pizza!")

pcc-solutions/chapter_05/voting.py

@@ -0,0 +1,7 @@
+age = 17
+if age >= 18:
+    print("You are old enough to vote!")
+    print("Have you registered to vote yet?")
+else:
+    print("Sorry, you are too young to vote.")
+    print("Please register to vote as soon as you turn 18!")

pcc-solutions/chapter_06/alien.py

@@ -0,0 +1,5 @@
+alien_0 = {'color': 'green', 'points': 5}
+print(alien_0)
+
+del alien_0['points']
+print(alien_0)

pcc-solutions/chapter_06/alien_no_points.py

@@ -0,0 +1,4 @@
+alien_0 = {'color': 'green', 'speed': 'slow'}
+
+point_value = alien_0.get('points', 'No point value assigned.')
+print(point_value)

pcc-solutions/chapter_06/aliens.py

@@ -0,0 +1,21 @@
+# Make an empty list for storing aliens.
+aliens = []
+
+# Make 30 green aliens.
+for alien_number in range(30):
+    new_alien = {'color': 'green', 'points': 5, 'speed': 'slow'}
+    aliens.append(new_alien)
+
+for alien in aliens[:3]:
+    if alien['color'] == 'green':
+        alien['color'] = 'yellow'
+        alien['speed'] = 'medium'
+        alien['points'] = 10
+
+# Show the first 5 aliens.
+for alien in aliens[:5]:
+    print(alien)
+print("...")
+
+# Show how many aliens have been created.
+print(f"Total number of aliens: {len(aliens)}")