pip install --upgrade Appium-Python-Client
如果出现权限提醒：
sudo -H pip install --upgrade Appium-Python-Client
git clone git@github.com:appium/python-client.git cd python-client python setup.py install
pip 升级 Appium-Python-Client
原文：https://www.cnblogs.com/xiyuan2016/p/9285212.html
