save project

a.py

+import pygame,sys
+pygame.init()
+size = width,height = 600,400
+speed = [1,1]
+BLACK = 0,0,0
+screen = pygame.display.set_mode(size,pygame.NOFRAME)
+pygame.display.set_caption("Pygame游戏之旅")
+ball = pygame.image.load(r"C:\Users\Administrator\Documents\level3-lesson24-diy3\ball.gif")
+ballrect = ball.get_rect()
+fps = 300
+fclock = pygame.time.Clock()
+while True:
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            exit()
+        elif event.type == pygame.KEYDOWN:
+            if event.key == pygame.K_a:
+                speed[0] = speed[0] if speed[0] == 0 else(abs(speed[0]))-1
+            elif event.key == pygame.K_d:
+                speed[0] = speed[0] + 1 if speed[0] > 0 else speed[0] -1
+            elif event.key == pygame.K_w:
+                speed[1] = speed[1] if speed[1] > 0 else speed[1] +1
+            elif event.key == pygame.K_s:
+                speed[1] = speed[1] if speed[1] == 0 else(abs(speed[1]))+1
+    ballrect = ballrect.move(speed[0],speed[1])
+    if ballrect.left < 0 or ballrect.right > width:
+        speed[0] =- speed[0]
+    if ballrect.top < 0 or ballrect.bottom > height:
+        speed[1] =- speed[1]
+    screen.fill(BLACK)
+    screen.blit(ball,ballrect)
+    pygame.display.update()
+    fclock.tick(fps)
\ No newline at end of file

b.py

+a = 10
+b = 20
+c = a if a>b else b
+print(c)
\ No newline at end of file