evdev_example.py

import asyncio, evdev

from mouse_handlers import left_mouse_down, left_mouse_up
from mouse_handlers import right_mouse_down, right_mouse_up
from evdev import ecodes

mouse_file = '/dev/input/event6'
keyboard_file = '/dev/input/event9'

down = 1
up = 0

@asyncio.coroutine
def print_events(device):
    while True:
        events = yield from device.async_read()
        for event in events:
            if device.fn == mouse_file:
                if event.type == ecodes.EV_REL:
                    print('Relative')
                elif event.type == ecodes.EV_KEY:
                    print(event.code)
                    print(ecodes.BTN_LEFT)
                    if event.code == ecodes.BTN_LEFT:
                        if event.value == down:
                            left_mouse_down()
                            print('Left mouse down')
                        elif event.value == up:
                            left_mouse_up()
                            print('Left mouse up')
                        else:
                            print('Left mouse unknown event')
                    elif event.code == ecodes.BTN_RIGHT:
                        if event.value == down:
                            right_mouse_down()
                            print('Right mouse down')
                        elif event.value == up:
                            right_mouse_up()
                            print('Right mouse up')
                        else:
                            print('Right mouse unknown event')
                    else:
                        print('Global unknown event')

            elif device.fn == keyboard_file:
                if event.code is ecodes.KEY_A:
                    print("Key A")
                if event.value is down:
                    print('Key down')
                elif event.value is up and event.type is 1:
                    print('Key up')
                else:
                    pass
            else:
                print('Other event')
         #   print(device.fn, evdev.categorize(event), sep=': ')

mouse = evdev.InputDevice(mouse_file)
keyboard = evdev.InputDevice(keyboard_file)

for device in mouse, keyboard:
    asyncio.ensure_future(print_events(device))

loop = asyncio.get_event_loop()
loop.run_forever()