save project

diy2.py

@@ -4,11 +4,14 @@ while True:
     if i>0
         name = input("请输入用户名:")
         password = input("请输入密码:")
+        i -= 1
         if name == username and password == userpassword:
             print("登录成功!")
-            name != username:
-        elif print("用户不存在")
-        else password != userpassword:
+            break
+        if  name != username:
+         print("用户不存在")
+         print("温馨提示：还有"str(i)+次登陆机会)
+        if password != userpassword:
             print("密码错误!请重新输入")
             exit()
 print("欢迎来到贝尔编程!")
\ No newline at end of file