Reference: Printer Driver: https://github.com/manpaz/python-escpos
Webserver https://github.com/tornadoweb/tornado
pyusb On my respbian report the NotImplementedError is_kernel_driver_active on some Linux systems sloved in https://github.com/arvydas/blinkstick-python/wiki/NotImplementedError-is_kernel_driver_active-on-some-Linux-systems sudo pip install pyusb==1.0.0b1
install guide http://cs3.swfu.edu.cn/~101152025/?p=622
other PIL qrcode pyserial ...
wifi configure vim /etc/wpa_supplicant/wpa_supplicant.conf