heroku - Can't get django-storages to set defaultStorage -

i'm using amazon aws s3, , trying set django app deploy on heroku , set static , media files using django-storages package (which uses boto).

my settings.py includes following:

debug = false staticfiles_finders = (     'django.contrib.staticfiles.finders.filesystemfinder',     'django.contrib.staticfiles.finders.appdirectoriesfinder',    'django.contrib.staticfiles.finders.defaultstoragefinder', )  if not debug:     default_file_storage = 'storages.backends.s3boto.s3botostorage'     aws_storage_bucket_name = os.environ['aws_storage_bucket_name']     staticfiles_storage = 'storages.backends.s3boto.s3botostorage'     s3_url = 'http://%s.s3.amazonaws.com/' % aws_storage_bucket_name     static_url = s3_url     admin_media_prefix = static_url + 'admin/'  installed_apps += (     'storages', ) 

when log console see if default storages set, though, i'm not getting should according django-storages getting started guide.

here's sample shell session:

>>> django.core.files.storage import default_storage >>> print default_storage.__class__ <class 'django.core.files.storage.defaultstorage'> 

according guide, should have got back:

>>> django.core.files.storage import default_storage >>> print default_storage.__class__ <class 's3storage.s3storage'> 

i have tried importing settings.py interactive shell. no luck. however, other aws settings stored fine, such s3_url, retrieving env variable , inserting amazon url.

can give me clue?

tia.

have installed boto? if boto not installed properly, django-storages set default storage class if not import boto.