查询pytest --version报错 AttributeError: module ‘collections‘ has no attribute ‘Mapping‘，卸载pytest重新安装

 卸载pytest及关联的插件

先查询一下pytest及对应关联的插件

 

pip uninstall colorama exceptiongroup iniconfig packaging pluggy tomli allure-pytest pytest-allure-adaptor pytest

回车，每次都回复Y，同意卸载

 再重新安装pytest

pip install pytest -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com

 

有个错误，单独安装一下

pip install attrs==19.2.0  -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com

pip install allure-python-commons==2.13.2  -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com

 

再查询版本号正常pytest --version