Adds 'Python Scripts' documentation on using responses from services. (#29151)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_integrations/python_script.markdown

@@ -128,6 +128,14 @@ The above `python_script` can be called using the following YAML as an input.
     rgb_color: [255, 0, 0]
 ```
 
+Services can also respond with data. Retrieving this data in your Python script can be done by setting the `blocking` and `return_response` arguments of the `hass.services.call` function to `True`. This is shown in the example below, in this case, retrieving the weather forecast and putting it into a variable:
+
+```python
+# get_forecast.py
+service_data = {"type": "daily", "entity_id": "weather.YOUR_HOME"}
+current_forecast = hass.services.call("weather", "get_forecast", service_data, blocking=True, return_response=True)
+```
+
 ## Documenting your Python scripts
 
 You can add names and descriptions for your Python scripts that will be shown in the frontend. To do so, simply create a `services.yaml` file in your `<config>/python_scripts` folder. Using the above Python script as an example, the `services.yaml` file would look like: