save project

sb.py

@@ -6,11 +6,9 @@ while True:
     if name == username and userpassword == abb:
             print("登陆成功")
             break 
-    print("用户名和密码错误！请重新输入")  
-    if name!=username:
+    elif name!=username:
         print("用户名错误！请重新输入") 
-        continue
-    if  password !=userpassword:
+    else:
         print("密码错误")
 print("欢迎来到贝尔编程")