Dodger - Invent Your Own Computer Games with Python - page 376

Figure 20-1: A screenshot of the Dodger game in action.
Importing the Modules
1. import pygame, random, sys
2. from pygame.locals import *
The Dodger game will import the same modules that our previous Pygame games have:
pygame , random , sys , and pygame.locals . The pygame.locals module
contains several constant variables that the Pygame library uses such as the event types
( QUIT , KEYDOWN , etc.) and keyboard keys ( K_ESCAPE , K_LEFT , etc.). By using the
from pygame.locals import * syntax, we can just type QUIT instead of
pygame.locals.QUIT .
Setting Up the Constant Variables
There are several constant variables in this game. We use constant variables because the
variable name is much more descriptive than a number. For example, from the line
windowSurface.fill(BACKGROUNDCOLOR) we know that the argument being sent