This package provides classes that solve common tasks when using python evdev:

https://github.com/gvalkov/python-evdev

It is mainly intended as backend to the Dpowers project:

https://github.com/dp0s/Dpowers

But maybe it's useful for your project too.

Features

• Find a list of all input devices and keep them up to date (if new are added / existign removed).
• Categorize the devices and select all devices with certain category.
• Loop over all input events of selected devices and call a function for each.
• Provide a global uinput object to handle sending events.

Install

sudo pip install evdev_prepared

After installation you can test for the necessary permissions:

import evdev_prepared
evdev_prepared.permission_test()

Accessing /dev/input

Evdev needs access to the /dev/input folder and its contents to receive events. In order to achieve this without root privilege, you can add the current user the the system's permission group "input":

sudo usermod -a -G input $USER

Afterwards, log in again or restart the system.

Writing to /dev/uinput

In order to run evdev_prepared.uinput module without root privilege, please add KERNEL=="uinput", TAG+="uaccess" to /etc/udev/rules.d/50-uinput.rules file:

echo 'KERNEL=="uinput", TAG+="uaccess"' | sudo tee -a '/etc/udev/rules.d/50-uinput.rules'

Restart the system afterwards.