add data files to python projects setup.py

Question

I have a project like this:

├── CHANGES.txt
├── LICENSE
├── MANIFEST.in
...
├── docs
│   └── index.rst
├── negar
│   ├── Negar.py
│   ├── Virastar.py
│   ├── Virastar.pyc
│   ├── __init__.py
│   ├── data
│   │   ├── __init__.py
│   │   └── untouchable.dat
│   ├── gui.py
│   ├── gui.pyc
│   ├── i18n
│   │   ├── fa_IR.qm
│   │   └── fa_IR.ts
│   └── negar.pro
├── setup.py
...

and inside that my file Virastar.py need some data from data.untouchable.dat. it works fine until I install the project with this setup.py:

setup(
    ...
    include_package_data=True,
    packages = find_packages() + ['negar'],
    package_dir={'negar': 'negar'},
    package_data={'negar': ['data/*.dat']},
    entry_points={
        'console_scripts': [
            'negar = negar.Negar:main',
        ],
    }, 
    ...  
)

after that when I start my program and when it needs that data file it return this error:

IOError: [Errno 2] No such file or directory: 'data/untochable.dat'

even in my egg-info sources I can't find any data file:

...
negar/Negar.py
negar/Virastar.py
negar/__init__.py
negar/gui.py
negar/data/__init__.py

have I missed something here?

Thank you all.

EDIT: Do I have to add any special thing in init.py?

and I have to add this: I used untouchable.dat just like this:

f = codecs.open('data/untouchable.dat', encoding="utf-8")

Answer 1

I used data_files

data_files = [('', ['negar/data/untouchable.dat'])],