listen for gamepad events and do some stuff for my home audio setup

mygamepad.py

#!/usr/bin/python
# --------------------------------------------------------------------------
#
# --------------------------------------------------------------------------

#import evdev
from evdev import InputDevice, categorize, ecodes
from subprocess import call

#creates object 'gamepad' to store the data
#you can call it whatever you like
gamepad = InputDevice('/dev/input/event0')

#button code variables (change to suit your device)
alsabtn = 290
teufelbtn = 289
restartbtn = 296

#prints out device info at start
print(gamepad)

#loop and filter by event code and print the mapped label
for event in gamepad.read_loop():
    if event.type == ecodes.EV_KEY:
        #print("key" + str(event.code))
        if event.value == 1:
            if event.code == alsabtn:
                print("start alsa")
                call(['sudo', 'cp', '/etc/default/snapclient.alsa', '/etc/default/snapclient'])
                call(['sudo', 'systemctl', 'restart', 'snapclient'])
            elif event.code == teufelbtn:
                print("start teufel")
                call(['sudo', 'cp', '/etc/default/snapclient.teufel', '/etc/default/snapclient'])
                call(['sudo', 'systemctl', 'restart', 'snapclient'])
            elif event.code == restartbtn:
                print("stop/start mopidy and snapserver")
                call(['sudo', 'systemctl', 'stop', 'mopidy'])
                call(['sudo', 'systemctl', 'stop', 'snapserver'])
                call(['sudo', 'truncate', '-s 0', '/var/log/mopidy/mopidy.log'])
                call(['sudo', 'truncate', '-s 0', '/var/log/daemon.log'])
                call(['sudo', 'truncate', '-s 0', '/var/log/syslog'])
                call(['sudo', 'systemctl', 'start', 'snapserver'])
                call(['sudo', 'systemctl', 'start', 'mopidy'])