因为之前已经安装了 allure-pytest
卸载 pytest-allure-adaptor
pip uninstall pytest-allure-adaptor pip install allure-pytest
pip uninstall pytest-allure-adaptor
pip install allure-pytest
AttributeError: module 'allure' has no attribute 'severity_level' 解决
原文：https://www.cnblogs.com/yanlin-10/p/14470457.html
