Can you write a python script which uses MQTT to modify the brightness of LIFX bulbs?
Certainly! To control LIFX bulbs using MQTT, you'll need to ensure that your LIFX bulbs are configured to connect to an MQTT broker. This is typically done using a third-party integration or a custom setup, as LIFX bulbs do not natively support MQTT.

### Requirements
1. **MQTT Broker**: You can use a public broker like Eclipse Mosquitto or set up your own.
2. **Python Libraries**: You will need the `paho-mqtt` library to handle MQTT communication. You can install it using pip:
   ```bash
   pip install paho-mqtt
   ```

### Sample Python Script
Below is a sample Python script that connects to an MQTT broker and sends a message to modify the brightness of LIFX bulbs. You will need to replace the placeholders with your actual MQTT broker details and topic.

```python
import paho.mqtt.client as mqtt
import json

# MQTT broker settings
MQTT_BROKER = 'your_mqtt_broker_address'  # e.g., 'localhost', 'broker.hivemq.com'
MQTT_PORT = 1883  # Default MQTT port
MQTT_TOPIC = 'lifx/your_bulb_id/state'  # Update this with your LIFX bulb's topic

# Brightness value (0-100)
brightness = 50  # Set desired brightness level (0-100)

# Create a JSON payload for the LIFX
 Sure! To write a Python script that uses MQTT to modify the brightness of LIFX bulbs, you'll need to install the `paho-mqtt` library first:

```bash
pip install paho-mqtt
```

Also, make sure you have the LIFX bulbs set up and connected to the same network as your computer.

Here's a Python script that uses MQTT to change the brightness of a LIFX bulb:

```python
import paho.mqtt.client as mqtt
import time

# MQTT settings
MQTT_BROKER = "localhost"  # Replace with your MQTT broker IP or hostname
MQTT_PORT = 1883

# LIFX settings
LIFX_BULB_IP = "192.168.1.101"  # Replace with your LIFX bulb IP address
LIFX_SELECTOR_TOPIC = "lifx/set_selector"
LIFX_BRIGHTNESS_TOPIC = "lifx/set_brightness"

def on_connect(client, userdata, flags, rc):
    print(f"Connected with result code {rc}")
    client.