有多种安装Python-Client的方法：
第一种
Install from PyPi, as 'Appium-Python-Client'. >pip install Appium-Python-Client
Install from source, via PyPi. From 'Appium-Python-Client', download and unarchive the source tarball (Appium-Python-Client-X.X.tar.gz).
第二种
>tar -xvf Appium-Python-Client-X.X.tar.gz
>cd Appium-Python-Client-X.X
>python setup.py install
Install from source via GitHub.
第三种
>git clone git@github.com:appium/python-client.git
>cd python-client
>python setup.py install
这里我们使用pip