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User notification library with pluggable backends. Compatible with popular frameworks such as Django, Flask, Celery.

Project Description

Pluggable notifications for your Python apps.

yell is not a notification storage or delivery backend but a set of APIs that make it easy to add your own delivery mechanisms.

The full documentation is available here.

Using notification decorators

from yell import notify
from yell.decorators import notification

@notification(name = 'buffalo')
def buffalo_printer(message):
    print message

@notification(name = 'buffalo')
def buffalo_saver(message):

notify("buffalo", _("Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo"))

Using notification classes

from yell import Notification, notify

class Buffalo(Notification):
    name = "buffalo"
    message = _("Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo")

    def notify(self, *args, **kwargs):
        print self.message

class BuffaloEmail(Buffalo):
    def notify(self, *args, **kwargs):
        send_mail("Buffalo", self.message, '', [kwargs.get('user').email])

class BuffaloDatabase(Buffalo):
    def notify(self, *args, **kwargs):
        BuffaloModel.objects.create(user = kwargs.get('user'))

# The default behaviour is to use every notification backend with the same
# name
notify("buffalo", user = User.objects.get(id=1))

# Only send emails
notify("buffalo", user = User.objects.get(id=1), backends = [BuffaloEmail])



  • backwards incompatible Guessing the file extension with the mimetypes package proved to be inconsistent across systems. TemplatedEmailBackend now makes use of explicitly declared file extensions.


  • Made the API saner to use (backwards incompatible):
    • yell.Yell became yell.Notification
    • yell.yell became yell.notify
    • yell.decorators.yelling became yell.decorators.notification

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