save project

1.py

-username="python"
-userpassword="123456"
-name=input("请输入用户名：")
-password=input("请输入密码：")
-if username==name and userpassword==password:
+username='python'
+userpassword='123456'
+while True:
+    name=input("请输入用户名：")
+    password=input("请输入密码：")
+    if name==username and password==userpassword:
         print("登陆成功！")
+        break
+    print("输入错误，请重新输入")
+print("欢迎来到贝儿编程")
\ No newline at end of file