save project

diy2.py

 username = "蔡徐坤"
 userpassword = "123456"
 while True:
+    if i>0:
         name = input("用户名:")
         password = input("密码:")
+        i-=1
         if name == username and password == userpassword:
             print("登录成功!")
             break
-    elif name != username:
+        if name != username:
             print("用户名,重新输入")
-    else:
+        if
             print("密码,重新输入")
+    else:
+        print("锁定")
+        exit()
 print("欢迎!")
\ No newline at end of file