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prefect_artifact.py
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prefect_artifact.py
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import httpx
from prefect import flow, task
from prefect.artifacts import create_markdown_artifact
# Artifacts are a way to post information about a flow run to Prefect
# I like to think of artifacts as the "custom tab" of a flow run page in the UI
# Docs: https://docs.prefect.io/latest/concepts/artifacts/
@task
def mark_it_down(temp):
markdown_report = f"""# Weather Report
## Recent weather
| Time | Temperature |
|:--------------|-------:|
| Now | {temp} |
| In 1 hour | {temp + 2} |
"""
create_markdown_artifact(
key="weather-report",
markdown=markdown_report,
description="Very scientific weather report",
)
@flow
def fetch_weather(lat: float, lon: float):
base_url = "https://api.open-meteo.com/v1/forecast/"
weather = httpx.get(
base_url,
params=dict(latitude=lat, longitude=lon, hourly="temperature_2m"),
)
most_recent_temp = float(weather.json()["hourly"]["temperature_2m"][0])
mark_it_down(most_recent_temp)
if __name__ == "__main__":
fetch_weather(38.9, -77.0)