Comments on: Threading in Django

By: walty

walty — Wed, 29 Sep 2010 00:48:33 +0000

Andrej Primc :
You shouldn’t set thread.daemon = True. If your main thread exits, the daemon thread will die. If it works for you, it’s because Apache doesn’t kill its processes often. :)
You should either use a normal thread or a queue.
import threading import Queue import atexitdef _worker(): while True: func, args, kwargs = _queue.get() try: func(*args, **kwargs) except: pass# bork or ignore here; ignore for now finally: _queue.task_done()# so we can join at exit def postpone(func): def decorator(*args, **kwargs): _queue.put((func, args, kwargs)) return decorator _queue = Queue.Queue() _thread = threading.Thread(target = _worker)# one is enough; it's postponed after all _thread.daemon = True# so we can exit _thread.start() def _cleanup(): _queue.join()# so we don't exit too soonatexit.register(_cleanup)
Use it like this
@postpone def foo(): pass # do your stuff here

andre primc,

your code works great!

it’s too bad that the post here does not support code indentation.

may be u try to put it somewhere in google code?

By: Andrej Primc

Andrej Primc — Wed, 30 Jun 2010 19:56:44 +0000

You shouldn’t set thread.daemon = True. If your main thread exits, the daemon thread will die. If it works for you, it’s because Apache doesn’t kill its processes often. :)

You should either use a normal thread or a queue.

import threading import Queue import atexit


def _worker():

	while True:

		func, args, kwargs = _queue.get()

		try:

			func(*args, **kwargs)

		except:

			pass	# bork or ignore here; ignore for now

		finally:

			_queue.task_done()	# so we can join at exit
def postpone(func):

	def decorator(*args, **kwargs):

		_queue.put((func, args, kwargs))

	return decorator
_queue = Queue.Queue()

_thread = threading.Thread(target = _worker)	# one is enough; it's postponed after all

_thread.daemon = True	# so we can exit

_thread.start()
def _cleanup():

	_queue.join()	# so we don't exit too soon

atexit.register(_cleanup)

Use it like this

@postpone def foo(): pass # do your stuff here

By: RawNawpairm

RawNawpairm — Fri, 01 Jan 2010 20:01:05 +0000

In my program I need to select multiple bytes, I have the first and last byte being 0×18 and 0×28. I’m editing a txt file. I have it so whatever I put in is replaced. So I have myfile.seekg ( hexvalues = (0×18, 0×19, 0×20, etc.) You get the point. I want to just put in 0×18 and 0×28 and it gets everything in the middle. Im using fstream

_____________
Darmowe tapety

By: Apache, processos, threads e django « Enrico Batista da Luz

Apache, processos, threads e django « Enrico Batista da Luz — Tue, 29 Sep 2009 12:19:07 +0000

[...] Threading in Django Categoriasdjango, tech Tags:apache, django, process, thread Comentários (0) Trackbacks (0) Deixe um comentário Trackback [...]

By: t2y

t2y — Sun, 27 Sep 2009 23:28:28 +0000

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I translated into Japanese in my site since it’s great.
Thank you for good article!

By: forest book

forest book — Sun, 27 Sep 2009 23:22:49 +0000

[django][python][translate]Django におけるスレッド…

Threading in Django | Artful Code 本稿は上記リンク元の和訳になります転載ミス、誤訳等については適宜修正します web 開発で利便性の高いスレッドの使用方法は珍しく、特に Python のグローバルインタープリタロックと共に使用するのは稀です。これに対して、幾つか注目…

By: Robert

Robert — Mon, 25 May 2009 15:07:45 +0000

Hi, I found your article useful, but also I found some errors ;) (from -> from_, kwargs={‘fail_silently’=True} -> kwargs={‘fail_silently’:True}). I made function similar to django.core.mail.send_mail:

import threading


def async_send_mail(subject, message, from_, recipients):

    """

    based on:

        http://www.artfulcode.net/articles/threading-django/

    returns true allways

    """

    from django.core.mail import send_mail

# Create a new thread in Daemon mode to send message t = threading.Thread(target=send_mail, args=[subject, message, from_, recipients], kwargs={'fail_silently':True}) t.setDaemon(True) t.start() return True