让pyusb获得接入usb设备的权限

首先，你需要找出 USB 设备的 vendorID 和 productID。使用lsusb命令。

(tensorflow) kris@kris-T7:/etc/udev/rules.d$ lsusb 
Bus 002 Device 002: ID 8087:8000 Intel Corp. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 8087:07dc Intel Corp. 
Bus 003 Device 004: ID 1c7a:0603 LighTuning Technology Inc. 
Bus 003 Device 013: ID 4040:4040  # vendorID:productID
Bus 003 Device 006: ID 5986:066d Acer, Inc 
Bus 003 Device 009: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

设置规则权限666给users

$ sudo gedit /etc/udev/rules.d/50-myusb.rules 
SUBSYSTEMS=="usb", ATTRS{idVendor}=="4040", ATTRS{idProduct}=="4040", GROUP="users", MODE="0666"

重启电脑,然后

$ sudo udevadm control --reload
$ sudo udevadm trigger