Python source files not extracted when I pip install my package

I've created some small and simple python package and uploaded it to the PYPI.
When I install my package using pip install, everything works fine,
but the python source files are not extracted, the installed-files.txt file does not include it.
SOURCES.txt DOES include the python source file.
Only __init__.py file is extracted.

I can not understand what is wrong with my package or the way I create it.
Please advice....

My package name is test_pypi
You can find it here: https://pypi.python.org/pypi/test_pypi
Package has no requirements

Package folder contains following files:

__init__.py - empty file
LICENSE.txt - contains Apache license

MANIFEST.in

include READMT.rst  
include LICENSE.txt  
recursive-include test_pypi/mdl *.py

setup.py

from setuptools import setup

def readme():
with open('README.rst') as f:
        return f.read()

setup(name='test_pypi',
    version='1.0',
    description='test_pypi_description',
    url='https://pypi.python.org/pypi/test_pypi',
    license='LICENSE.txt',
    author='Evgeny Fedoruk',
    author_email='[email protected]',
    packages=['test_pypi'],
    install_requires=[],
    zip_safe=False)

The package folder (test_pypi) contains:

__init__.py - empty file
mdl (folder) contains
- empty __init__.py file
- python source file test.py
```
print 'hello'
```

I do the following for uploading the package:

python setup.py register sdist upload

I do the following for installing it:

pip install test_pypi

One last thing, I tried installing it with virtual env and without it - same problem, the test.py file is not extracted

Solution

You need to include mdl in your packages argument to setup():

packages=['test_pypi','test_pypi.mdl'],

Packages you want to include must either be explicitly listed, or you can have setuptools find them using find_packages() :

from setuptools import find_packages
my_packages=find_packages()