tbarbugli

from django.db import models
from django.utils.importlib import import_module

class OneToOneModelFactory(object):
    """
    creates related models :cls 
    which are subclasses of :subclass named :subclasses

    convenient to define a bunch of related models programmatically 
    (eg. localize table columns in separate tables)

tbarbugli

class Item(models.Model):
    ... a bunch of very interesting fields ...
    popularity = models.IntegerField()

tbarbugli

from boto.utils import parse_ts
from django.core.files.storage import get_storage_class
from storages.backends.s3boto import S3BotoStorage

"""
make sure you have this setting
AWS_PRELOAD_METADATA = True
and that you have python-dateutils==1.5 installed
"""

tbarbugli

class GhettoRouter(object):

    def route_for_task(self, task, args=None, kwargs=None):
        return {'queue': 'celery',
                 'exchange': 'celery',
                 'exchange_type': 'direct',
                 'routing_key': 'celery'}

CELERY_ROUTES = (GhettoRouter(), )

tbarbugli

Traceback (most recent call last):
  File "/srv/fashiolista/lib/python2.7/site-packages/raven/utils/serializer/manager.py", line 68, in transform
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 582, in __repr__
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 446, in as_uri
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 435, in info
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 414, in _info
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 637, in transport
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/connection.py", line 395, in create_transport
  File "/srv/fashiolista/lib/python2.7/site-packages/kombu/transport/redis.py", line 622, in __init__
    self.cycle = MultiChannelPoller()

tbarbugli

[2012-10-12 15:07:35,033: WARNING/MainProcess] builtin_function_or_method     1018       +30
[2012-10-12 15:07:35,034: WARNING/MainProcess] dict                           1924       +21
[2012-10-12 15:07:35,034: WARNING/MainProcess] tuple                          1415        +9

tbarbugli

import objgraph
socks_refs = objgraph.by_type('Connection')
objgraph.show_backrefs(socks_refs, filename='sample-%r.png' % now, max_depth=10)

tbarbugli

import objgraph
socks_refs = objgraph.by_type('Connection')
objgraph.show_backrefs(socks_refs, filename='sample-%r.png' % now, max_depth=10)

tbarbugli

import time


def get_unique_timestamp(redis_connection, uniqueness_namespace):
    while True:
        t = time.time()
        key = namespace % t
        if redis_connection.setnx(key):
            return key
        time.sleep(0.1)

tbarbugli

Traceback (most recent call last):
  File "/srv/fashiolista/lib/python2.7/site-packages/celery/worker/__init__.py", line 351, in start
    component.start()
  File "/srv/fashiolista/lib/python2.7/site-packages/celery/worker/consumer.py", line 393, in start
    self.consume_messages()
  File "/srv/fashiolista/lib/python2.7/site-packages/celery/worker/consumer.py", line 483, in consume_messages
    handlermap[fileno](fileno, event)
  File "/srv/fashiolista/lib/python2.7/site-packages/billiard/pool.py", line 1047, in maintain_pool
    self._maintain_pool()
  File "/srv/fashiolista/lib/python2.7/site-packages/billiard/pool.py", line 1042, in _maintain_pool