save project

diy2.py

-username = "python"
-userpassword = "123456"
+username='1111'
+userpassword='1111122'
 while True:
 while True:
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
-    print("用户名和密码错误!请重新输入")
+    if name != username :
+        print("用户名不存在，请重新输入！")
+    if name != userpassword :
+        print("密码不正确，请重新输入！")
 else:
 else:
     print("欢迎来到贝尔编程!")
     print("欢迎来到贝尔编程!")
\ No newline at end of file