save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+i = 3
 while True:
 while True:
+    if i>0:   
         name = input("请输入用户名：")
         name = input("请输入用户名：")
         password = input("请输入密码：")
         password = input("请输入密码：")
+        i -= 1
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登陆成功！")
             print("登陆成功！")
             break
             break
@@ -10,4 +13,7 @@ while True:
             print("不存在该用户，请重新输入！")
             print("不存在该用户，请重新输入！")
         else:
         else:
             print("不存在该密码，请重新输入！")
             print("不存在该密码，请重新输入！")
+    else:
+        print("sb,请紫砂")
+        exit()
 print("欢迎来到贝尔编程！")
 print("欢迎来到贝尔编程！")
\ No newline at end of file