解决PytestUnknownMarkWarning: Unknown pytest.mark.welcome - is this a typo? You can register custom marks to avoid this warning

笔者在学习pytest的参数配置，使用@pytest.mark 功能，有报错，写个博客记录下

@pytest.mark.webtest

在项目同名新建pytest.in文件，多个标签需要换行，且有缩进

[pytest]
markers=webtest
    webtests