setup.py exclude some python files from bdist

I have a django project with this kind of architecture :

• setup.py
• project/
  • __init__.py
  • manage.py
  • settings/
    • __init__.py
    • base.py
    • dev.py
  • urls/
    • __init__.py
    • base.py
    • dev.py

I wanted to deploy it in a .egg without my 'dev.py' files. I tried different ways : first, with a

find_packages(exclude=['*.dev','dev'])

, then with a MANIFEST.in which contains :

global-exclude dev.py

The second solution seems to work when I do a sdist - with this warning when I install it :

warning: no previously-included files matching 'dev.py' found anywhere in distribution 

, but does'nt work with a bdist-egg.

Here a part of my setup.py :

from setuptools import setup, find_packages
project import VERSION


packages = [
        'project',
        'project.settings',
        'project.urls',
]

setup(name='project',
  version=VERSION,
  package_dir = {'project' : 'project'},
  description  = 'My Project',
  author       = 'Simon Urli',
  author_email = '',
  url = '',
  packages = packages, #find_packages('project',exclude=['*.dev', 'dev']),
)

Note that I use python 2.6.6, maybe it matters. Any idea how to create my egg excluding the dev files properly ?