Comi 1240/unzip everything

Chapter_01/Listing 1_1.py

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+"""Hello world! in Python and pygame."""
+
+# Import and initialize pygame.
+import pygame
+pygame.init()
+
+# Annotate variable
+screen: pygame.Surface
+
+# Display "Hello world!" as the window title.
+screen = pygame.display.set_mode((400, 200))
+pygame.display.set_caption("Hello world!")
+
+# Display "Hello world!" in the console.
+print("Hello world!")
+
+# Quit when the user presses enter.
+input("Press enter to quit...")
+pygame.quit()

Chapter_01/Listing 1_10.py

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+"""Calculate the angle between stars in an aerial firework."""
+
+import random
+
+# Annotate variables
+DEGREES_CIRCLE: int = 360
+num_stars: int
+angle: float
+
+# Randomly generate a number of stars.
+num_stars = random.randint(2, 360)
+
+# Calculate the angle between the stars.
+angle = DEGREES_CIRCLE / num_stars
+
+# Tell the user the angle between stars.
+print("You will need an angle of " + str(angle)
+      + "° between " + str(num_stars) + " stars.")

Chapter_01/Listing 1_11.py

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+"""Play a number guessing game."""
+
+import random
+
+# Annotate variables
+number: int
+guess: int
+
+# Randomly generate a number between 1 and 50.
+number = random.randint(1, 50)
+
+# Set up the game.
+print("I'm thinking of a number between 1 and 50.")
+
+# Obtain the user's guess until they guess correctly.
+guess = 0
+while guess != number:
+    guess = int(input("What is your guess? "))
+    if guess < number:
+        print("Higher...")
+    elif guess > number:
+        print("Lower...")
+    else:
+        print("You got it!")

Chapter_01/Listing 1_12.py

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+"""Draw firework stars with pygame."""
+
+import math
+
+# Import and initialize pygame.
+import pygame
+pygame.init()
+
+# Define some size constants to make drawing easier.
+PI_OVER_4: float = math.radians(45)
+RADIUS: int = 120
+SIZE: int = 480
+CENTER: float = (SIZE - 40) / 2
+
+# Annotate variables
+screen: pygame.Surface
+star: pygame.Surface
+star_num: int
+x: float
+y: float
+
+# Create a pygame window.
+screen = pygame.display.set_mode((SIZE, SIZE))
+pygame.display.set_caption("Stars!")
+
+# Load the star image.
+star = pygame.image.load("star.png")
+
+# Draw eight stars at 45° angles.
+star_num = 0
+while star_num < 8:
+    # Compute the x and y coordinates of a star.
+    star_num = star_num + 1
+    x = CENTER + RADIUS * math.cos(star_num * PI_OVER_4)
+    y = CENTER + RADIUS * math.sin(star_num * PI_OVER_4)
+
+    # Add the star to the drawing.
+    screen.blit(star, (x,y))
+
+# Show the drawing.
+pygame.display.flip()
+
+# Quit when the user presses enter.
+input("Press enter to quit...")
+pygame.quit()

Chapter_01/Listing 1_13.py

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+"""Validate fireworks input."""
+
+# Annotate variables
+num_stars: int
+
+# Obtain the number of stars from the user.
+num_stars = int(input("How many stars? "))
+
+# Check that the value is between 2 and 360.
+while num_stars < 2 or num_stars > 360:
+    print("The number must be between 2 and 360.")
+    num_stars = int(input("How many stars? "))
+
+# The input is now valid, print a message.
+print("Your input is valid.")

Chapter_01/Listing 1_14.py

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+"""Manage a library summer reading program."""
+
+# Annotate and initialize variables.
+max_minutes: int = -1
+total_minutes: int = 0
+max_name: str = None
+instructions: str
+num_children: int
+name: str
+num_minutes: int
+
+# Display instructions to the user.
+instructions = "Enter each child's name and the number of "
+instructions += "minutes they read this week."
+print(instructions)
+
+# Obtain information for five children.
+num_children = 0
+while num_children < 5:
+    name = input("What is the child's name? ")
+    num_minutes = int(input("How many minutes did "
+                            + name + " read this week? "))
+    # Find the max so far and total.
+    if num_minutes > max_minutes:
+        max_minutes = num_minutes
+        max_name = name
+    total_minutes += num_minutes
+    # Update the counter.
+    num_children += 1
+
+# Display a summary of reading information.
+print(max_name + " is our star reader, with a total of " 
+      + str(max_minutes) + " minutes.")
+print("The total number of minutes read by all of the" 
+      + " children was " + str(total_minutes) + ".")

Chapter_01/Listing 1_15.py

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+"""Manage a library summer reading program."""
+
+# Annotate and initialize variables.
+max_minutes: int = -1
+total_minutes: int = 0
+max_name: str = None
+name: str
+num_minutes: int
+
+# Display instructions to the user.
+print("Enter each child's name and the number of minutes ")
+print("they read this week. Enter 'quit' when done.")
+
+# Obtain child information until done.
+name = input("Enter a child's name or 'quit': ")
+while name != "quit":
+    num_minutes = int(input("How many minutes did "
+                            + name + " read this week? "))
+    if num_minutes > max_minutes:
+        max_minutes = num_minutes
+        max_name = name
+    total_minutes += num_minutes
+    name = input("Enter a child's name or 'quit': ")
+
+# Display a summary of reading information.
+if total_minutes != 0:
+    print("The child who read the most is " + max_name 
+          + ", who read " + str(max_minutes) + " minutes.")
+    print("The total number of minutes read was " 
+          + str(total_minutes))

Chapter_01/Listing 1_16.py

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+"""Manage a library summer reading program."""
+
+# Annotate variables
+num_children: int
+name: str
+num_minutes: int
+
+# Obtain information for five children.
+for num_children in range(5):
+    name = input("What is the child's name? ")
+    num_minutes = int(input("How many minutes did "
+                            + name + " read this week? "))

Chapter_01/Listing 1_17.py

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+"""Draw firework stars with pygame."""
+
+import math
+
+# Import and initialize pygame.
+import pygame
+pygame.init()
+
+# Define some size constants to make drawing easier.
+PI_OVER_4: float = math.radians(45)
+RADIUS: int = 120
+SIZE: int = 480
+CENTER: float = (SIZE - 40) / 2
+
+# Annotate variables
+screen: pygame.Surface
+star: pygame.Surface
+star_num: int
+x: float
+y: float
+
+# Create a pygame window.
+screen = pygame.display.set_mode((SIZE, SIZE))
+pygame.display.set_caption("Stars!")
+
+# Load the star image.
+star = pygame.image.load("star.png")
+
+# Draw eight stars at 45° angles.
+for star_num in range(8):
+    # Compute the x and y coordinates of a star.
+    x = CENTER + RADIUS * math.cos(star_num * PI_OVER_4)
+    y = CENTER + RADIUS * math.sin(star_num * PI_OVER_4)
+
+    # Add the star to the drawing.
+    screen.blit(star, (x,y))
+
+# Show the drawing.
+pygame.display.flip()
+
+# Quit when the user presses enter.
+input("Press enter to quit...")
+pygame.quit()
+
+

Chapter_01/Listing 1_18.py

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+"""Draw firework stars with pygame."""
+
+import math
+
+# Import and initialize pygame.
+import pygame
+pygame.init()
+
+# Define some size constants to make drawing easier.
+PI_OVER_4: float = math.radians(45)
+RADIUS: int = 120
+SIZE: int = 480
+CENTER: float = (SIZE - 40) / 2
+
+# Annotate variables
+screen: pygame.Surface
+star: pygame.Surface
+star_num: int
+x: float
+y: float
+user_quit: bool
+event: pygame.event.Event
+
+# Create a pygame window.
+screen = pygame.display.set_mode((SIZE, SIZE))
+pygame.display.set_caption("Stars!")
+
+# Load the star image.
+star = pygame.image.load("star.png")
+
+# Draw eight stars at 45° angles.
+for star_num in range(8):
+    # Compute the x and y coordinates of a star.
+    x = CENTER + RADIUS * math.cos(star_num * PI_OVER_4)
+    y = CENTER + RADIUS * math.sin(star_num * PI_OVER_4)
+
+    # Add the star to the drawing.
+    screen.blit(star, (x,y))
+
+# Show the drawing.
+pygame.display.flip()
+
+# Quit when the user closes the window.
+user_quit = False
+while not user_quit:
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            user_quit = True
+
+pygame.quit()
+

Chapter_01/Listing 1_19.py

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+"""Draw a star at a random location for each user click."""
+
+import random
+
+# Import and initialize pygame.
+import pygame
+pygame.init()
+
+# Define constants and annotate variables
+SIZE: int = 480
+screen: pygame.Surface
+star: pygame.Surface
+offset_w: float
+offset_h: float
+user_quit: bool
+event: pygame.event.Event
+x: int
+y: int
+
+# Create a pygame window.
+screen = pygame.display.set_mode((SIZE, SIZE))
+pygame.display.set_caption("Click to make a star!")
+
+# Load the star image.
+star = pygame.image.load("star.png")
+offset_w = star.get_width() / 2
+offset_h = star.get_height() / 2
+
+# Draw a star for each click.
+user_quit = False
+while not user_quit:
+    for event in pygame.event.get():
+        # Process a quit choice.
+        if event.type == pygame.QUIT:
+            user_quit = True
+        # Process a click by drawing a star.
+        elif event.type == pygame.MOUSEBUTTONUP:
+            x = random.randint(0,SIZE) - offset_w
+            y = random.randint(0,SIZE) - offset_h
+            screen.blit(star, (x,y))   
+    # Show the drawing.
+    pygame.display.flip()
+
+pygame.quit()
+

Chapter_01/Listing 1_2.py

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+"""Calculate the angle between stars in an aerial firework."""
+
+# Annotate variables
+DEGREES_CIRCLE: int = 360
+num_stars: int 
+angle: float 
+
+# Obtain the number of stars from the user.
+num_stars = int(input("How many stars? "))
+
+# Calculate the angle between the stars.
+angle = DEGREES_CIRCLE / num_stars
+
+# Tell the user the angle between stars.
+print("You will need an angle of " + str(angle)
+      + "\u00B0 between each star.")