Interactive Programming in Python Week7 Code style

 1 def draw(c):
 2     global paddle1_pos, paddle2_pos
 3     
 4     paddle_width = 80
 5 
 6     if paddle_width/2 <= paddle1_pos + paddle1_vel <= width - paddle_width/2:
 7         paddle1_pos += paddle1_vel
 8     if paddle_width/2 <= paddle2_pos + paddle2_vel <= width - paddle_width/2:
 9         paddle2_pos += paddle2_vel
10         
11     c.draw_line([width/2, 0],[width/2, height], 1, "White")
12     
13     c.draw_line([4, paddle1_pos-paddle_width/2], [4, paddle1_pos+paddle_width/2], 4, "White")
14     c.draw_line([width-4, paddle2_pos-paddle_width/2], [width-4, paddle2_pos+paddle_width/2], 4, "White")

 1 class Paddle:
 2     def __init__(self, loc, pos, vel):
 3         self.loc = loc
 4         self.pos = pos
 5         self.vel = vel
 6         self.width = 80
 7     
 8     def move(self):
 9         if self.width/2 <= self.pos + self.vel <= width - self.width/2:
10             self.pos += self.vel
11             
12     def draw(c, self):
13         c.draw_line([self.loc, self.pos-self.width / 2], PADDLE_THICKNESS, "White")
14 
15 def draw(c):
16     paddle1.move()
17     paddle2.move()
18         
19     c.draw_line([width / 2, 0],[width / 2, height], 1, "White")
20     
21     paddle1.draw(c)
22     paddle2.draw(c)

 1 def keydown(key):
 2     global paddle1_vel, paddle2_vel
 3     if key == simplegui.KEY_MAP["up"]:
 4         paddle2_vel -= 2
 5     elif key == simplegui.KEY_MAP["down"]:
 6         paddle2_vel += 2
 7     elif key == simplegui.KEY_MAP["w"]:
 8         paddle1_vel -= 2
 9     elif key == simplegui.KEY_MAP["s"]:
10         paddle1_vel += 2

1 inputs = {"up": [1, -2],
2           "down": [1, 2],
3           "w": [0, -2],
4           "s": [0, 2]}
5 
6 def keydown(key):
7     for i in inputs:
8         if key == simplegui.KEY_MAP[i]:
9             paddle_vel[inputs[i][0]] += inputs[i][1]