save project

diy2.py

@@ -6,9 +6,8 @@ while True:
     if name == username and password ==userpassword:
     if name == username and password ==userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
-    if name != username:
+    elif name != username:
         print("用户不存在")
         print("用户不存在")
-        continue
-    if password != userpassword:
+    else:
         print("密码错误");
         print("密码错误");
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file