save project

m.py

-username = "db"
-userpassword = "123456"
+username = "SB"
+userpassword = "110120119"
 while True:
     name = input("请输入用户名:")
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
         break 
-    if name!=name1:
-    print("用户名和密码错误!请重新输入")
-    if password!=password1:
-
+    if name!=username1:
+        print("用户名不存在!请重新输入")
+    if password!=userpassword1:
+        print("密码错误！请重新输入")
 print("欢迎来到贝尔编程!")