Simultaneously running multiple instances of the same script

Configuration
17

After banging my head against this for a while, and remembering what was said before about automations being able to run simultaneously, I realized that if you don’t care that your scripts might get run simultaneously (or, in fact, you want this), then you can write it as an automation with a custom event trigger, and call it by firing that event. I’ve re-written several of my scripts like this, and it works very well.

Define your script as an automation:

automation:
  - alias: automation_name
    trigger:
      - platform: event
        event_type: automation_name  <--- I name the event after the automation
                                          to keep it simple.
    action:
      - service: whatevs
        data_template:
          foo: "{{ trigger.event.data.param_1 }}"
          bar: "{{ trigger.event.data.param_2 }}"

Then call it like this:

  action:
    - event: automation_name
      event_data_template:
        param_1: asdf
        param_2: qwer
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