home-assistant.io/source/_cookbook/python_component_basic_state.markdown
2016-02-07 14:21:44 -08:00

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---
layout: page
title: "Basic State Setting Example"
description: ""
date: 2016-02-07 12:13
sidebar: true
comments: false
sharing: true
footer: true
ha_category: Custom Python Component Examples
---
This is a simple hello world example to show the basics for setting a state. To use this example, create the file `<config dir>/custom_components/hello_state.py` and copy the below example code.
```python
# The domain of your component. Should be equal to the name of your component
DOMAIN = "hello_state"
CONF_NAME = 'name'
DEFAULT_NAME = 'World'
def setup(hass, config):
""" Setup is called when Home Assistant is loading our component. """
# Get the name from the configuration. Use DEFAULT_NAME if no name provided.
name = config[DOMAIN].get(CONF_NAME, DEFAULT_NAME)
# States are in the format DOMAIN.OBJECT_ID
hass.states.set('hello_state.hello', name)
# return boolean to indicate that initialization was successful
return True
```
Load the component by adding the following to your `configuration.yaml`:
```yaml
# configuration.yaml entry
hello_state:
# optional
name: Paulus
```