Quick hack to make my Hue switches control a Sonoff/eWeLink device as well.

hue2sonoff.py

#!/usr/bin/env python3

HUE_POLL_SECONDS = 5
HUE_IP = '192.168.1.123'
HUE_USERNAME = 'xyz123'  # see https://github.com/quentinsf/qhue#creating-a-user
HUE_NAME_LOWER_SUBSTRINGS = ['living room', 'front door']
EWELINK_USERNAME = '[email protected]'
EWELINK_PASSWORD = 'password'
EWELINK_REGION = 'eu'
EWELINK_OUTLET = None

import qhue    # pip3 install qhue
import sonoff  # pip3 install sonoff-python
import subprocess
import sys
import time
import traceback

bridge = qhue.Bridge(HUE_IP, HUE_USERNAME)
states = {}

ewelink = sonoff.Sonoff(EWELINK_USERNAME, EWELINK_PASSWORD, EWELINK_REGION)
deviceid = ewelink.get_devices()[0]['deviceid']

while True:
    try:
        sensors = bridge.sensors()
    except:
        traceback.print_exc()
        time.sleep(HUE_POLL_SECONDS)
        continue
    for s in sensors:
        sensor = sensors[s]
        state = sensor['state']
        if 'buttonevent' not in state:
            # daylight, motion, geofence, counters etc.
            continue
        name = sensor['name'].lower()
        if not any(map(name.__contains__, HUE_NAME_LOWER_SUBSTRINGS)):
            continue
        if s not in states:
            states[s] = state
            # don't alter anything on startup
            continue
        if states[s] != state:
            button = str(state['buttonevent'])[0]
            try:
                if button == '1':
                    # "on" pressed
                    ewelink.switch('on', deviceid, EWELINK_OUTLET)
                elif button == '4':
                    # "off" pressed
                    ewelink.switch('off', deviceid, EWELINK_OUTLET)
                states[s] = state
            except:
                traceback.print_exc()
    time.sleep(HUE_POLL_SECONDS)