1、Failed building wheel for pyaudio
使用 sudo apt-get install python-pyaudio python3-pyaudio安装
2、TypeError: unsupported operand type(s) for -=: 'Retry' and 'int'
安装超时，最简单解决方案：pip --default-timeout=5000 install
3、FileNotFoundError: [Errno 2] No such file or directory: 'fswebcam': 'fswebcam'
安装fswebcam sudo apt-get install fswebcam