crython/tab¶
Contains functionality for executing jobs (python functions) from cron expressions.
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class
crython.tab.CronTab(*args, **kwargs)¶ Background thread responsible for executing background jobs.
This constructor should always be called with keyword arguments. Arguments are:
group should be None; reserved for future extension when a ThreadGroup class is implemented.
target is the callable object to be invoked by the run() method. Defaults to None, meaning nothing is called.
name is the thread name. By default, a unique name is constructed of the form “Thread-N” where N is a small decimal number.
args is the argument tuple for the target invocation. Defaults to ().
kwargs is a dictionary of keyword arguments for the target invocation. Defaults to {}.
If a subclass overrides the constructor, it must make sure to invoke the base class constructor (Thread.__init__()) before doing anything else to the thread.
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register(name, job)¶ Register the given name and function.
- Parameters
name – Name of the registered job. Note: This should be unique.
job – Callable decorated with
job()to execute.
- Returns
None.
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deregister(name)¶ De-register the job that was registered with the given name.
- Parameters
name – Name of the job to remove.
- Returns
None.
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stop()¶ Stop this background thread from executing any more jobs.
- Returns
None.
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run()¶ Background function that processes all registered jobs and invokes them based on their context and expression.
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