Print a Message

Part of the Python in a Game Window section of Coddy's Pygame journey. Lesson 2 of 32.

print() writes a line of text in the Console, the panel beside the game. Nothing appears in the window: print is for you, the programmer, to see what your program is doing.

print("Hello")
print(640 * 480)

Text in quotes is printed as it is written. Leave the quotes out and Python works the value out first: print(640 * 480) shows 307200, while print("640 * 480") shows 640 * 480. In Python * means times.

Where a line goes matters. Every program in this section has the same three marked parts:

# Set things up here, before the game loop.
    # Change things here, once a frame.
    # Draw here, after the fill.

The setup part runs once, at the start. The other two are inside the game loop, the lines under while running:, which run 60 times a second. So a print in the setup part shows once, and a print inside the loop floods the Console. Section 2 explains the loop line by line.

Challenge

Easy

Print two lines in the Console:

In the setup part, before the game loop, replace print("Hello") with a print of The night begins.
Below it, print the number of pixels in the window, 640 * 480, worked out by Python.
Keep both prints out of the game loop, so each runs once.

Try it yourself

import pygame

pygame.init()
screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("Night Sky")
clock = pygame.time.Clock()

# Set things up here, before the game loop.
print("Hello")

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Change things here, once a frame.

    screen.fill((20, 24, 48))
    # Draw here, after the fill.

    pygame.display.flip()
    clock.tick(60)

pygame.quit()