Condition Syntax

NOTE: Red Engine has been renamed as Rocketry

Warning

This documentation is out of date. The project continues under: https://rocketry.readthedocs.io

This section lists the pre-built condition syntax that are allowed to be passed as strings to start_cond or end_cond of a task.

Note

You can also combine multiple conditions using logical operators:

• &: AND operator

• |: OR operator

• ~ NOT operator

For example: (daily | after task 'mytask') & ~time of day after 10:00

Contents:

• Execution on fixed time interval
• Fixed time interval
• Timedelta
• Task Status
• Task Dependence

Explanations of the syntax notation:

• <start>, <end> and <time>: These are fixed time components

  • if “hour”, use format mm:ss, ie. 30:00 (half past)

  • if “day”, use 24 hour clock, ie. 14:00 (2 PM)

  • if “week”, supply weekdays as full names or abbreviations, ie. Monday or Mon

  • if “month”, supply a day of month, ie. 13th (13th of month)

• <timedelta>: These are time deltas

  • Supply timedelta as sting, ie. 1 days, 30 min. See pandas.Timedelta.

• <task>: These are names of tasks

  • Supply a name of a task. The task can be created later but should be created before inspecting the status of the condition.