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Editorial Team
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Asked: 2026-05-24T03:24:24+00:00

I’m trying to build a Python package (pyregion) that contains a *.pyx file and

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I’m trying to build a Python package (pyregion) that contains a *.pyx file and error comes during the build process. Checking out the below output:

$ python setup.py build
running build
running build_py
creating build
creating build/lib.macosx-10.5-x86_64-2.7
....
running build_ext
building 'pyregion._region_filter' extension
C compiler: gcc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -DNDEBUG -g -O3 -arch x86_64

error: unknown file type '.pyx' (from 'src/_region_filter.pyx')

Any ideas on what the issue could be? Just to note, I’m using the Enthought build of Python (7.1) on OSX with the latest Xcode (4.1).

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1 Answer

  1. Editorial Team

    The .pyx should should be compiled to C with Pyrex and then compiled to object code. Check if a src/_region_filter.c file is present in the distribution and hack the setup.py script to build that instead. (Also, consider filing a bug report, since this shouldn’t be happening.)

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