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95 lines
3.3 KiB
Markdown
95 lines
3.3 KiB
Markdown
---
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layout: page
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title: "Scrape Sensor"
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description: "Instructions how to integrate Web scrape sensors into Home Assistant."
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date: 2016-10-12 09:10
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: home-assistant.png
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ha_category: Sensor
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ha_release: 0.31
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ha_iot_class: "Cloud Polling"
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---
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The `scrape` sensor platform is scraping information from websites. The sensor loads a HTML page and gives you the option to search and split out a value. As this is not a full-blown web scraper like [scrapy](https://scrapy.org/). It will most likely only work with simple webpages and it can be time-consuming to get the right section.
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To enable this sensor, add the following lines to your `configuration.yaml` file:
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: scrape
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resource: https://home-assistant.io
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select: ".current-version h1"
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```
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Configuration variables:
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- **resource** (*Required*): The URL to the website that contains the value.
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- **select** (*Required*): Defines the HTML tag to search for. Check Beautifulsoup's [CSS selectors](https://www.crummy.com/software/BeautifulSoup/bs4/doc/#css-selectors) for details.
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- **name** (*Optional*): Name of the sensor.
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- **unit_of_measurement** (*Optional*): Defines the units of measurement of the sensor, if any.
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## {% linkable_title Examples %}
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In this section you find some real life examples of how to use this sensor. There is also a [Jupyter notebook](http://nbviewer.jupyter.org/github/home-assistant/home-assistant-notebooks/blob/master/web-scraping.ipynb) available for this example to give you a bit more insight.
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### {% linkable_title Home Assistant %}
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The current release Home Assistant is published on [https://home-assistant.io/](https://home-assistant.io/)
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```yaml
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sensor:
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# Example configuration.yaml entry
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- platform: scrape
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resource: https://home-assistant.io
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name: Release
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select: ".current-version h1"
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value_template: '{% raw %}{{ value.split(":")[1] }}{% endraw %}'
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```
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### {% linkable_title Available implementations %}
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Get the counter for all our implementations from the [Component overview](/components/) page.
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```yaml
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# Example configuration.yaml entry
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sensor:
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- platform: scrape
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resource: https://home-assistant.io/components/
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name: Home Assistant impl.
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select: 'a[href="#all"]'
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value_template: '{% raw %}{{ value.split("(")[1].split(")")[0] }}{% endraw %}'
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```
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### {% linkable_title Get a value out of a tag %}
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The German [Federal Office for Radiation protection (Bundesamt für Strahlenschutz)](http://www.bfs.de/) is publishing various details about optical radiation including an UV index. This example is getting the index for a region in Germany.
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```yaml
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sensor:
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# Example configuration.yaml entry
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- platform: scrape
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resource: http://www.bfs.de/DE/themen/opt/uv/uv-index/prognose/prognose_node.html
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name: Coast Ostsee
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select: 'p:nth-of-type(19)'
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unit_of_measurement: 'UV Index'
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```
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### {% linkable_title IFTTT status %}
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If you make heavy use of the [IFTTT](/components/ifttt/) web service for your automations and are curious about the [status of IFTTT](http://status.ifttt.com/) then you can display the current state of IFTTT in your frontend.
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```yaml
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sensor:
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# Example configuration.yaml entry
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- platform: scrape
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resource: http://status.ifttt.com/
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name: IFTTT status
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select: '.component-status'
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```
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