Popular recipes tagged "application" but not "network"

Consumer Application Skeleton (Python)

2015-06-30T03:24:07-07:00

Python recipe 579074 by Vovan (application, consumer, daemon, framework). Revision 2.

Consumer Application Skeleton

This is very basic skeleton for data processing application implementing consumer pattern:

while is_running():
    task = get_next_task_from_queue()
    if task:
        submit_task_for_processing(task)
    else:
        sleep_for_a_moment()

Here's an example:

class ExampleApp(ConsumerAppBase):

    def _get_next_task(self):

        # Get next task from the queue.
        return self._queue.next()

    def _run_task(self, task):

        # This code's being executed in separate worker thread of
        # ThreadPoolExecutor
        return task / 2

    def _on_task_done(self, task, future):

        # Once worker thread finished - task results are available
        # in _on_task_done() callback as a concurrent.futures.Future object.
        self._log.info('Task done. Result: %s', future.result())

Python single instance (cross-platform) (Python)

2013-02-10T16:22:33-08:00

Python recipe 578453 by Esteban Castro Borsani (application, instance, python, single, singleton).

Yet another way to get a single instance application. This recipe uses file locking only.

Python single instance (cross-platform) (Python)

2013-02-28T04:14:08-08:00

Python recipe 578476 by Deepak (application, instance, python, single, singleton).

Yet another way to get a single instance application. This recipe uses file locking only.

Directory Size (GUI) (Python)

2011-02-09T13:47:54-08:00

Python recipe 577567 by Stephen Chappell (application, directory, gui, sizeof, tree). Revision 2.

Have you ever wanted to find out how much room a particular directory was taking up on your hard drive? A roommate of mine in college was having trouble keeping track of where his hard drive space is going, so the following program provided a solution that allows a brief overview of a directory's size along with all of its children. A tree view is created using tkinter and is populated with the directory's name, cumulative size, immediate total file size, and full path. The search button is disabled during a search, and the directory listing with its children is automatically updated.