Schedule

Represents a schedule for batch jobs.

`init(cron_expression='', at_minutes=None, every_minute=None, at_hours=None, every_hour=None, weekdays=None, day_of_month=None, in_month=None, every_month=None, timezone=None, run_after_job_uuid=None, run_after_job_name=None, run_after_job_condition=None)`

Initialize a Schedule.

You can either provide a raw cron_expression or use the human-readable helper parameters (which are compiled into cron syntax automatically).

Parameters:

Name	Type	Description	Default
`cron_expression`	`str`	A raw cron string (e.g. `"0 /2 * *"`). If provided alongside helper parameters, the helpers take precedence.	`''`
`at_minutes`	`list[int] \| None`	Specific minutes past the hour to run (e.g. `[0, 30]` for `":00"` and `":30"`).	`None`
`every_minute`	`int \| None`	Run every N minutes (e.g. `5` for every 5 minutes).	`None`
`at_hours`	`list[int] \| None`	Specific hours of the day to run (0 -- 23).	`None`
`every_hour`	`int \| None`	Run every N hours.	`None`
`weekdays`	`list[str] \| None`	Days of the week to run (e.g. `["mon", "wed", "fri"]`).	`None`
`day_of_month`	`int \| None`	Day of the month to run (1 -- 31).	`None`
`in_month`	`list[str] \| None`	Months to run in (e.g. `["jan", "apr", "jul", "oct"]`).	`None`
`every_month`	`int \| None`	Run every N months.	`None`
`timezone`	`str \| None`	IANA timezone name (e.g. `"America/New_York"`).	`None`
`run_after_job_uuid`	`str \| None`	UUID of a job that must complete before this schedule triggers.	`None`
`run_after_job_name`	`str \| None`	Name of a job that must complete before this schedule triggers.	`None`
`run_after_job_condition`	`str \| None`	Required completion status of the predecessor job (e.g. `"success"`).	`None`

Example

from datatailr import Schedule
# Every weekday at 08:00 and 16:00 UTC
s = Schedule(at_hours=[8, 16], weekdays=["mon","tue","wed","thu","fri"])

Returns the compiled cron string.