sway automatic scaling on dock (for my Framework)

scalingd.service

[Unit]
Description=Sway scaling daemon

[Service]
Environment=HOME=/home/rsmet/
ExecStart=/usr/bin/python /home/rsmet/.local/bin/sway-scaling-daemon.py
Restart=always
ExecStartPost=/bin/sleep 1

[Install]
WantedBy=default.target

sway-scaling-daemon.py

#!/usr/bin/env python3

import pyudev
import subprocess

def main():
    context = pyudev.Context()
    monitor = pyudev.Monitor.from_netlink(context)
    monitor.filter_by(subsystem='usb')
    monitor.start()

    devpath = None

    for device in iter(monitor.poll, None):
        if devpath is None:
            if "ID_VENDOR_ID" not in device:
                print("Ignoring", device)
                continue
            if "ID_MODEL_ID" not in device:
                print("Ignoring", device.properties["ID_VENDOR_ID"])
                continue
            if device.properties["ID_VENDOR_ID"] != u'2109' or device.properties["ID_MODEL_ID"] != u'2822':
                print("Ignoring", device.properties["ID_VENDOR_ID"], device.properties["ID_MODEL_ID"])
                continue
        elif device.action != "remove":
            continue
        elif device.properties["DEVPATH"] != devpath:
            continue

        if device.action == "add":
            devpath = device.properties["DEVPATH"]
            scale = "1.5"
        elif device.action == "remove":
            devpath = None
            scale = "1.3"
        else:
            print(device.action)
            continue
        print("Setting scale to", scale, "saving dev", devpath)
        # I can add more logic here, to run different scripts for different devices.
        subprocess.call(["/usr/bin/swaymsg", "output", "eDP-1", "scale", scale])

if __name__ == '__main__':
    main()