@Marvin can you tell me how to run prefect locally with a worker + scheduling a python task? which processes do i neeed to run?

To run Prefect locally with a worker and schedule a Python task, you'll need to follow these steps: 1. Run the Prefect Server: You can start a Prefect server locally using Docker. This will allow you to manage and monitor your flows and tasks. Use the following command to run the server:

bash
   docker run -p 4200:4200 --rm <http://ghcr.io/astral-sh/uv:python3.12-bookworm-slim|ghcr.io/astral-sh/uv:python3.12-bookworm-slim> uvx prefect server start --host 0.0.0.0

This command runs the server and exposes it on port 4200. 2. Create and Run a Worker: You need to run a worker process that will execute your tasks. Workers poll the Prefect server for tasks to execute. You can create a worker by setting the necessary environment variables, such as

PREFECT_API_URL

, and then running the worker script. 3. Define and Schedule a Task: In Prefect, tasks are defined using the

@task

decorator. You can schedule tasks using the

@flow

decorator to create a flow and then use Prefect's scheduling capabilities to run the flow at specified intervals. Here's a basic example of defining a task and a flow:

python
from prefect import flow, task

@task
def my_task():
    print("Running my task")

@flow
def my_flow():
    my_task()

if __name__ == "__main__":
    my_flow()

4. Run the Flow: Execute the flow script to register it with the Prefect server. You can then use the Prefect UI or CLI to schedule the flow. For more details on running Prefect locally, you can refer to the Prefect documentation and GitHub examples. If you have any specific configurations or additional requirements, feel free to ask!

how do i schedule it?

To schedule a flow in Prefect 3.x, you have several options: 1. Using the Prefect UI: - Navigate to the Schedules section of a Deployment page in the UI. - Click on the "+ Schedule" button. - Choose between Interval or Cron to create a schedule. - Note that the UI does not support creating RRule schedules, but it will display RRule schedules created through other methods. 2. Using the CLI: - You can use the

prefect deployment schedule

command to add a schedule to your flow. - This can be done through the interactive

prefect deploy

command. 3. Using a Configuration File: - Define schedules in the

prefect.yaml

configuration file under the

deployments -> schedules

section. 4. Programmatically: - If you're building your deployment with the

serve

method of the

Flow

object or using the

serve

utility for managing multiple flows, you can specify schedules using

cron

,

interval

, or

rrule

parameters. For more detailed instructions, you can refer to the Prefect documentation on adding schedules. If you have any specific questions or need further assistance, feel free to ask!