mirror of
https://github.com/home-assistant/home-assistant.io.git
synced 2025-05-02 01:07:36 +00:00
ef17ca3881
* IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal * IQS Internal
66 lines
2.4 KiB
Markdown
66 lines
2.4 KiB
Markdown
---
|
|
layout: page
|
|
title: "Python Scripts"
|
|
description: "Instructions on how to setup Python scripts within Home Assistant."
|
|
date: 2017-06-15 19:59
|
|
sidebar: true
|
|
comments: false
|
|
sharing: true
|
|
footer: true
|
|
logo: home-assistant.png
|
|
ha_category: Automation
|
|
ha_release: 0.47
|
|
ha_qa_scale: internal
|
|
---
|
|
|
|
This component allows you to write Python scripts that are exposed as services in Home Assistant. Each Python file created in the `<config>/python_scripts/` folder will be exposed as a service. The content is not cached so you can easily develop: edit file, save changes, call service. The scripts are run in a sandboxed environment. The following variables are available in the sandbox:
|
|
|
|
| Name | Description |
|
|
| ---- | ----------- |
|
|
| `hass` | The Home Assistant object. Access is only allowed to call services, set/remove states and fire events. [API reference][hass-api]
|
|
| `data` | The data passed to the Python Script service call.
|
|
| `logger` | A logger to allow you to log messages: `logger.info()`, `logger.warning()`, `logger.error()`. [API reference][logger-api]
|
|
|
|
[hass-api]: /developers/development_hass_object/
|
|
[logger-api]: https://docs.python.org/3.4/library/logging.html#logger-objects
|
|
|
|
## {% linkable_title Writing your first script %}
|
|
|
|
- Add to `configuration.yaml`: `python_script:`
|
|
- Create folder `<config>/python_scripts`
|
|
- Create a file `hello_world.py` in the folder and give it this content:
|
|
|
|
```python
|
|
name = data.get('name', 'world')
|
|
logger.info("Hello {}".format(name))
|
|
hass.bus.fire(name, { "wow": "from a Python script!" })
|
|
```
|
|
|
|
- Start Home Assistant
|
|
- Call service `python_script/hello_world` with parameters
|
|
|
|
```json
|
|
{
|
|
"name": "you"
|
|
}
|
|
```
|
|
|
|
## {% linkable_title Calling Services %}
|
|
|
|
The following example shows how to call a service from `python_script`. This script takes two parameters: `entity_id` (required), `rgb_color` (optional) and calls `light.turn_on` service by setting the brightness value to `255`.
|
|
|
|
```python
|
|
entity_id = data.get('entity_id')
|
|
rgb_color = data.get('rgb_color', [255, 255, 255])
|
|
if entity_id is not None:
|
|
service_data = {'entity_id': entity_id, 'rgb_color': rgb_color, 'brightness': 255 }
|
|
hass.services.call('light', 'turn_on', service_data, False)
|
|
```
|
|
The above `python_script` can be called using the following JSON as an input.
|
|
|
|
```json
|
|
{"entity_id": "light.bedroom", "rgb_color": [255, 0, 0] }
|
|
```
|
|
|
|
For more examples, visit the [Scripts section](https://community.home-assistant.io/c/projects/scripts) in our forum.
|