Crontabula 🧛

Crontabula is a small library for parsing Crontab expressions into Python objects. The usage is simple:

import crontabula

crontab = crontabula.parse("*/10 3,6 * * 1-4")
print(crontab.next)
# datetime.datetime(...)

Installation

Install with:

pip install crontabula

CLI

Crontabula comes with a small utility to print debug information about a crontab expression. Make sure you install the library with the cli extra (pip install "crontabula[cli]").

$ crontabula "*/15 * 1,15 * 1-5,6"
minute         0 15 30 45
hour           0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
day of month   1 15
month          1 2 3 4 5 6 7 8 9 10 11 12
day of week    1 2 3 4 5 6
next time      2022-04-19 17:30:00 (in 0:03:59.987874)

Contributing

Configure the environment and run the tests using Poetry:

$ poetry install
$ poetry run pre-commit install  # Optional, for linting with black
$ poetry run pytest