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A statement-based scheduling framework for Python  ↦

Unlike the alternatives, Rocketry’s scheduler is statement-based. Rocketry natively supports the same scheduling strategies as the other options, including cron and task pipelining, but it can also be arbitrarily extended using custom scheduling statements.

That’s pretty useful! I used to struggle to shove conditionals in to my cron jobs. Example time:

from rocketry.conds import daily, time_of_week
from pathlib import Path

@app.cond()
def file_exists(file):
    return Path(file).exists()

@app.task(daily.after("08:00") & file_exists("myfile.csv"))
def do_work():
    ...

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