操作步骤

（1）安装依赖包argcomplete

sudo pip install 'argcomplete>=0.5.7'

（2）全局激活，对所有的pyhton包生效

sudo activate-global-python-argcomplete

（3）仅对pytest永久生效

register-python-argcomplete pytest >> ~/.bashrc

（4）仅对pytest当前登录窗口生效一次

eval "$(register-python-argcomplete pytest)"