Distributing python package with cython module

[Michael Hogg]

Hi,

Just trying to understand the ins/outs of distributing a python package with cython modules and the process that the end user has to follow.

Is there a method where the user can download the package (i.e. the source from pypi or using easy_install) and the cython modules with automatically compile, or compile when the module is imported for the first time?

Are there any simple examples or good sources of documentation?

Cheers,

Mike

[Jason Rudy]

Perhaps this will help:

http://stackoverflow.com/questions/4505747/how-should-i-structure-a-python-package-that-contains-cython-code

The key thing to realize is that Cython produces C and C++ code as an output.  If you distribute the C/C++ code, your users don't have to have Cython installed in order to install your package.

[Michael Hogg]

Jason - Thanks for your reply. I have followed that post and have a similar setup.py file that is now able to use either the pyx or the c file.

I have a another question related to this; is it also possible to include the compiled cython modules (pyd on Windows) in a python package? I tried to create a "dumb binary", which appears to work ok, but when I upload it to PyPi it says that my file is an invalid distribution file. That is, I created a "dumb binary" on Windows using distutils via:

python setup.py bdist

which creates a zip file with the pyd file in it ok, but when I try to upload it to PyPi it says that my zip file is an invalid distribution file. Looking at the other packages on PyPi that have cython extension modules, I found that almost all of these only supply the source, and not the compiled extension module. Do you know if what I am trying to do is possible, or if this is just a PyPi error?

Note: I don't want to create a windows installer, as this is a plug-in to another program that doesn't get installed in the default location. I just need the user to copy the directory containing my package to another directory.

Thanks again

Mike

 

  

[Jason Rudy]

Hi Mike,

Unfortunately I have no idea.  I've never used PyPi or tried to package windows binaries.  Maybe someone else on this list can point to a good resource?  I'd be interested in learning the answer if you find it out.

Best,

Jason

 

  

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