使用Pthon编写自动化脚本时，导入appium失败，百度查到需要安装Appium-Python-Client，于是CMD执行pip install Appium-Python-Client， 报错：
Building wheels for collected packages: cryptography
Building wheel for cryptography (PEP 517) ... error
ERROR: Failed cleaning build dir for cryptography
Failed to build cryptography
ERROR: Could not build wheels for cryptography which use PEP 517 and cannot be installed directly
解决办法：
1.执行命令：easy_install -U pip
展示如下图则表示pip升级成功
2.执行命令：pip install cryptography
展示如下图则表示安装成功
3.执行命令：pip install Appium-Python-Client
展示图下图则表示安装成功
标签：Appium,cryptography,Python,Client,build,install,pip From： https://www.cnblogs.com/wx170119/p/16591593.html