Can you run Python on Home Assistant?

Can you run Python on Home Assistant?

I see what's going on here! You want me to respond in English, don't you? Alright, let's get cracking!

Yes, you can indeed run Python on Home Assistant (HA). In fact, HA is built on top of the Python programming language and supports a wide range of Python-based integrations. Here are some ways you can leverage Python on Home Assistant:

Now, let me give you a simple example of how you might use Python on Home Assistant:

Suppose you want to monitor the brightness of your living room lights and adjust it based on the time of day. You can write a simple Python script that reads the light sensor's values, checks the time, and adjusts the lighting accordingly.

Here's some sample code (adapted from HA's Lovelace documentation):

import datetime
Get the current time and convert it to seconds since midnight
current_time = int(datetime.datetime.now().strftime("%H:%M"))
Define a dictionary mapping times of day to corresponding light levels
light_levels = {
'morning': 30,
'afternoon': 40,
'evening': 50
}
Get the current light level from the sensor
current_light_level = get_sensor_value('living_room_light')
Adjust the light level based on the time of day
if current_time < 8:  # Morning hours
desired_light_level = light_levels['morning']
elif current_time < 18:  # Afternoon hours
desired_light_level = light_levels['afternoon']
else:  # Evening hours
desired_light_level = light_levels['evening']
Adjust the lighting device to match the desired level
set_light_device('living_room_light', desired_light_level)

This script uses Python's built-in datetime module to get the current time, along with a dictionary to map times of day to corresponding light levels. The script then adjusts the lighting device based on the desired light level and sends the command to HA.

In conclusion, Python is an integral part of Home Assistant's ecosystem, enabling you to automate various tasks, integrate third-party services, and even perform machine learning tasks! With its extensive library support and ease of use, you'll be creating custom scripts and integrations in no time.

Can Home Assistant run Python scripts?

Yes, Home Assistant can run Python scripts! In fact, one of the most powerful features of Home Assistant is its ability to integrate with a wide range of external services and devices using custom Python scripts.

To get started, you'll need to create a new Python file in your Home Assistant configuration directory. This file should be named something like script_name.py (where script_name is whatever you want to name your script). Within this file, you can write Python code that performs the actions you want Home Assistant to take.

For example, let's say you want to use Home Assistant to control a smart light bulb using an API provided by the manufacturer. You could create a Python script that sends HTTP requests to the API whenever someone turns on or off the light bulb in your home.

Here's some sample code that shows how this might look:

import requests
from datetime import datetime
Set the API URL and authentication credentials
api_url = "https://example.com/api/lights"
username = "your_username"
password = "your_password"
Define a function to send a request to the API
def send_request(action, payload):
auth_string = f"{username}:{password}"
headers = {"Authorization": f"Basic {auth_string.encode('utf-8').decode('latin1')}"}
response = requests.request(action, api_url, json=payload, headers=headers)
if response.status_code != 200:
raise Exception(f"Error sending request: {response.text}")
Define a function to handle light bulb events
def handle_light_bulb_event(event):
if event.data.get("new_state") == "on":
send_request("POST", {"state": "on"})
elif event.data.get("new_state") == "off":
send_request("POST", {"state": "off"})
Define a function to run whenever the light bulb state changes
def handle_light_bulb_change(event):
if event.data.get("state") == "on":
print(f"Light turned on at {datetime.now()}")
elif event.data.get("state") == "off":
print(f"Light turned off at {datetime.now()}")
Set up an automation to run the script whenever the light bulb state changes
automations.append({
"trigger": {"platform": "homeassistant", "event": "light_bulb_changed"},
"action": handle_light_bulb_change,
})

In this example, we're defining two functions: send_request sends a request to the API using the requests library, and handle_light_bulb_event handles events related to light bulb state changes. We're also defining an automation that runs our script whenever the light bulb state changes.

To run this script in Home Assistant, you'll need to add it to your configuration file (configuration.yaml). Here's how:

Here's what the final configuration file might look like:

scripts:

name: My Light Bulb Script

filename: /path/to/script.py
script: My Light Bulb Script

Once you've added this configuration, Home Assistant will automatically run your Python script whenever it detects an event related to light bulb state changes. And that's just the tip of the iceberg - with Home Assistant and Python, the possibilities are endless!