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DEVELOPING.md

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Development

mkvirtualenv pylibdmtx
pip install -U pip
pip install -r requirements.pip

nosetests
python -m pylibdmtx.scripts.read_datamatrix pylibdmtx/tests/datamatrix.png

Testing python versions

Make a virtual env and install tox

mkvirtualenv tox
pip install tox

If you use non-standard locations for your Python builds, make the interpreters available on the PATH before running tox.

PATH=~/local/python-2.7.15/bin:~/local/python-3.4.9/bin:~/local/python-3.5.6/bin:~/local/python-3.6.8/bin:~/local/python-3.7.2/bin:$PATH
tox

Windows

Save the 32-bit and 64-bit libdmtx.dll files to libdmtx-32.dll and libdmtx-64.dll respectively, in the pylibdmtx directory. The load_pylibdmtx function in wrapper.py looks for the appropriate DLLs. The appropriate DLL is packaged up into the wheel build and is installed alongside the package source. This strategy allows the same method to be used when pylibdmtx is run from source, as an installed package and when included in a frozen binary.

Releasing

  1. Install tools.
pip install wheel

  1. Build Create source and wheel builds. The win32 and win_amd64 wheels will contain the appropriate libdmtx.dll.

    rm -rf build dist MANIFEST.in pylibdmtx.egg-info
cp MANIFEST.in.all MANIFEST.in
./setup.py bdist_wheel

cat MANIFEST.in.all MANIFEST.in.win32 > MANIFEST.in
./setup.py bdist_wheel --plat-name=win32

# Remove these dirs to prevent win32 DLL from being included in win64 build
rm -rf build pylibdmtx.egg-info
cat MANIFEST.in.all MANIFEST.in.win64 > MANIFEST.in
./setup.py bdist_wheel --plat-name=win_amd64

rm -rf build MANIFEST.in pylibdmtx.egg-info

  2. Release to pypitest (see https://packaging.python.org/guides/using-testpypi/)

    mkvirtualenv pypi
pip install twine
twine upload -r testpypi dist/*

  3. Test the release to pypitest

    set PATH=%PATH%;c:\python35\;c:\python35\scripts
\Python35\Scripts\mkvirtualenv.bat --python=c:\python27\python.exe test1
    • Install dependencies that are not on testpypi.python.org. If you are on Python 2.x, these are mandatory
    pip install enum34 pathlib
    • Pillow for tests and read_datamatrix. We can't use the pip install pylibdmtx[scripts] form here because Pillow will not be on testpypi.python.org
    pip install Pillow
    • Install the package itself
    pip install --index https://testpypi.python.org/simple pylibdmtx
    • Test
    read_datamatrix --help
read_datamatrix <path-to-datamatrix.png>

  4. If all is well, release to PyPI

    twine upload dist/*

    pip install pylibdmtx[scripts]