Cron expressions to datetimes¶

pip install croniter

import arrow
from croniter import croniter
from dateutil import tz

# cron expression
expression = "30 6 * * *"

# getting events for the next 15 days
calculate_until = arrow.utcnow().shift(days=15).ceil("day")

# timezone
timezone = "America/Sao_Paulo"

if not croniter.is_valid(expression):
    raise ValueError(f"Invalid when_expression: {expression}")

for next_event in croniter(expression, arrow.now(tz.gettz(timezone)).datetime):

    next_date = arrow.get(next_event, tzinfo=tz.gettz(timezone))
    if next_date > calculate_until:
        break

    print(next_date)

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