save project

my_Tetris.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
-
+import random
 pygame.init()   # 初始化
 pygame.init()   # 初始化
 score = 0
 score = 0
 grid_size = 20  # 格子大小
 grid_size = 20  # 格子大小