---
title: Cron triggers are now supported in Python Workers
description: You can now set up scheduled handlers in your Python Workers
image: https://edgetunnel-b2h.pages.dev/changelog-preview.png
---

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## Cron triggers are now supported in Python Workers

Apr 24, 2025 

[ Workers ](https://edgetunnel-b2h.pages.dev/workers/) 

You can now create Python Workers which are executed via a cron trigger.

This is similar to how it's done in JavaScript Workers, simply define a scheduled event listener in your Worker:

**Python**

```python
from workers import handler


@handler
async def on_scheduled(event, env, ctx):
  print("cron processed")
```

Define a cron trigger configuration in your Wrangler configuration file:

* [  wrangler.jsonc ](#tab-panel-2919)
* [  wrangler.toml ](#tab-panel-2920)

**JSONC**

```jsonc
{
  "triggers": {
    // Schedule cron triggers:
    // - At every 3rd minute
    // - At 15:00 (UTC) on first day of the month
    // - At 23:59 (UTC) on the last weekday of the month
    "crons": [
      "*/3 * * * *",
      "0 15 1 * *",
      "59 23 LW * *"
    ]
  }
}
```

**TOML**

```toml
[triggers]
crons = [ "*/3 * * * *", "0 15 1 * *", "59 23 LW * *" ]
```

Then test your new handler by using Wrangler with the `--test-scheduled` flag and making a request to `/cdn-cgi/handler/scheduled?cron=*+*+*+*+*`:

```sh
npx wrangler dev --test-scheduled


curl "http://localhost:8787/cdn-cgi/handler/scheduled?cron=*+*+*+*+*"
```

Consult the [Workers Cron Triggers page](https://edgetunnel-b2h.pages.dev/workers/configuration/cron-triggers/) for full details on cron triggers in Workers.

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