save project

diy2.py

-username = "python"
-userpassword = "123456"
+username = "11"
+userpassword = "120427"
+
 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!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+        print("欢迎来到编程世界!")
+        break
\ No newline at end of file
+    if user != username:
+        print("用户名输入错误")
+    elif password != userpassword:    
+        print("密码错误")
\ No newline at end of file