save project

diy2.py

@@ -7,8 +7,10 @@ while True:
        password = input("请输入密码:")
        if name == username and password == userpassword:
              print("登录成功!")
+             i=i-1
              break
        print("用户和密码错误")
+       print("还有:"+str(i))
        if name != username:
         print("用户不存在")
         continue