save project

diy2.py

@@ -6,9 +6,11 @@ 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
-    elif name!=username:
+    elif expression:
+        pass name!=username:
         print("账号错了")
         print("账号错了")
     else:
     else:
+        password!=userpassword:
         print("密码错了")
         print("密码错了")
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")