Async Python library for discovering and controlling dLight smart lamps over local Wi-Fi. Pure asyncio. Zero dependencies.

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Install

pip install dlight-client

Python 3.9 – 3.13. No other packages required.

Quick start

import asyncio
from dlightclient import AsyncDLightClient, DLightDevice, discover_devices

async def main():
    devices = await discover_devices()        # UDP broadcast, 3 s window
    info = devices[0]

    async with AsyncDLightClient(persistent=True) as client:
        lamp = DLightDevice(info["ip_address"], info["deviceId"], client)
        await lamp.turn_on()
        await lamp.set_brightness(75)
        await lamp.set_color_temperature(3000) # warm white

asyncio.run(main())

Features

• Device discovery — UDP broadcast scan; finds all lamps on the local network
• Persistent connections — connection pool with per-device locking and idle eviction
• State caching — optimistic updates with automatic rollback on failure
• Automatic retries — exponential backoff on transient errors (max_retries, retry_backoff)
• Optional TLS — pass ssl=True or a custom ssl.SSLContext
• Typed models — TypedDict classes for DeviceState, DeviceInfo, CommandResult
• CLI — python -m dlightclient.cli --discover for quick exploration
• Wi-Fi provisioning — send credentials to a lamp in SoftAP mode

CLI

# Discover all lamps
python -m dlightclient.cli --discover

# Interact with a specific lamp
python -m dlightclient.cli --ip 192.168.1.123 --id DL12345

# Debug with verbose output
python -m dlightclient.cli --ip 192.168.1.123 --id DL12345 -vv

Documentation

Full documentation at https://irishsmurf.github.io/dlight-client/

Getting Started	Install, discover, first commands
User Guide	Discovery, control, connections, error handling
API Reference	Full class and method reference
Architecture	Internals for contributors
Contributing	Dev setup, testing, PR conventions
Changelog	What's changed in each release

Upgrade cadence

Patch releases (1.x.Y) are made as needed for bug fixes and security patches. Minor releases (1.X.0) ship new features and are backwards compatible. Major releases (X.0.0) may include breaking changes and are announced in advance via GitHub Issues.

License

MIT — see LICENSE.