save project

diy1.py

@@ -6,9 +6,8 @@ while True:
     if zh==username and mm==userpassword:
         print("登陆成功!")
         break
-    if zh!=username:
+    elif zh!=username:
         print("账号不存在!请重新输入!")
-        continue
-    if mm!=userpassword:
+    else :
         print("密码输入有误!请重新输入!")
 print("欢迎来到贝尔编程!!!")
\ No newline at end of file