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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def save(self, *args, **kwargs):
 """ custom save method to send email and push notification """

        created = self.pk is None

        # save notification to database only if user settings allow it
        if self.check_user_settings(medium='web'):
            super(Notification, self).save(*args, **kwargs)

        if created:
            # send notifications through other mediums according to user settings
            self.send_notifications()