save project

001.py

+username="python"
+userpassword="123456"
+while True:
+    name=input("名字")
+    password=input("密码")
+    if name == username and password==userpassword:
+        print("登录成功")
+        break
+    if name != username
+        print("用户名不存在，请重新输入！")
+    if name != userpassword:
+        continue
+    print("用户名和密码错误！请重新输入！")
+print("欢迎来到贝尔编程！")
+if
+
+elif
\ No newline at end of file

aa.py

+usename

snake.py

-import pygame
-from pygame import locals
-# 初始化pygame，为使用pygame做准备
-pygame.init()
-
-# 创建一个窗口
-screen=pygame.display.set_mode((660,480))
-while True:
-    for vent in 
\ No newline at end of file