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cython
3.1.0a1

This version was deleted from PyPI around 2025-08-13. Installing fails with:
$ pip3 install cython==3.1.0a1 ERROR: Could not find a version that satisfies the requirement cython==3.1.0a1
View other deleted versions of cython

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-08-12/ \ cython==3.1.0a1
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
Cython-3.1.0a1-cp38-cp38-macosx_10_9_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp38-cp38-macosx_11_0_arm64.whl (2.8MB)
Cython-3.1.0a1-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.2MB)
Cython-3.1.0a1-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (3.1MB)
Cython-3.1.0a1-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp38-cp38-musllinux_1_2_aarch64.whl (3.1MB)
Cython-3.1.0a1-cp38-cp38-musllinux_1_2_i686.whl (3.3MB)
Cython-3.1.0a1-cp38-cp38-musllinux_1_2_x86_64.whl (3.3MB)
Cython-3.1.0a1-cp38-cp38-win_amd64.whl (2.6MB)
Cython-3.1.0a1-cp38-cp38-win32.whl (2.4MB)
Cython-3.1.0a1-cp39-cp39-macosx_10_9_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp39-cp39-macosx_11_0_arm64.whl (2.8MB)
Cython-3.1.0a1-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.2MB)
Cython-3.1.0a1-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (3.0MB)
Cython-3.1.0a1-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp39-cp39-musllinux_1_2_aarch64.whl (3.1MB)
Cython-3.1.0a1-cp39-cp39-musllinux_1_2_i686.whl (3.3MB)
Cython-3.1.0a1-cp39-cp39-musllinux_1_2_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp39-cp39-win_amd64.whl (2.5MB)
Cython-3.1.0a1-cp39-cp39-win32.whl (2.4MB)
Cython-3.1.0a1-cp310-cp310-macosx_10_9_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp310-cp310-macosx_11_0_arm64.whl (2.7MB)
Cython-3.1.0a1-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.2MB)
Cython-3.1.0a1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (3.0MB)
Cython-3.1.0a1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp310-cp310-musllinux_1_2_aarch64.whl (3.1MB)
Cython-3.1.0a1-cp310-cp310-musllinux_1_2_i686.whl (3.3MB)
Cython-3.1.0a1-cp310-cp310-musllinux_1_2_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp310-cp310-win_amd64.whl (2.5MB)
Cython-3.1.0a1-cp310-cp310-win32.whl (2.3MB)
Cython-3.1.0a1-cp311-cp311-macosx_10_9_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp311-cp311-macosx_11_0_arm64.whl (2.8MB)
Cython-3.1.0a1-cp311-cp311-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.2MB)
Cython-3.1.0a1-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (3.0MB)
Cython-3.1.0a1-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp311-cp311-musllinux_1_2_aarch64.whl (3.1MB)
Cython-3.1.0a1-cp311-cp311-musllinux_1_2_i686.whl (3.3MB)
Cython-3.1.0a1-cp311-cp311-musllinux_1_2_x86_64.whl (3.2MB)
Cython-3.1.0a1-cp311-cp311-win_amd64.whl (2.5MB)
Cython-3.1.0a1-cp311-cp311-win32.whl (2.3MB)
Cython-3.1.0a1-cp312-cp312-macosx_10_13_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp312-cp312-macosx_11_0_arm64.whl (2.8MB)
Cython-3.1.0a1-cp312-cp312-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.1MB)
Cython-3.1.0a1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (2.9MB)
Cython-3.1.0a1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.1MB)
Cython-3.1.0a1-cp312-cp312-musllinux_1_2_aarch64.whl (3.0MB)
Cython-3.1.0a1-cp312-cp312-musllinux_1_2_i686.whl (3.2MB)
Cython-3.1.0a1-cp312-cp312-musllinux_1_2_x86_64.whl (3.1MB)
Cython-3.1.0a1-cp312-cp312-win_amd64.whl (2.6MB)
Cython-3.1.0a1-cp312-cp312-win32.whl (2.4MB)
Cython-3.1.0a1-cp313-cp313-macosx_10_13_x86_64.whl (2.9MB)
Cython-3.1.0a1-cp313-cp313-macosx_11_0_arm64.whl (2.8MB)
Cython-3.1.0a1-cp313-cp313-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (3.1MB)
Cython-3.1.0a1-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (2.9MB)
Cython-3.1.0a1-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (3.1MB)
Cython-3.1.0a1-cp313-cp313-musllinux_1_2_aarch64.whl (3.0MB)
Cython-3.1.0a1-cp313-cp313-musllinux_1_2_i686.whl (3.2MB)
Cython-3.1.0a1-cp313-cp313-musllinux_1_2_x86_64.whl (3.1MB)
Cython-3.1.0a1-cp313-cp313-win_amd64.whl (2.6MB)
Cython-3.1.0a1-cp313-cp313-win32.whl (2.4MB)
Cython-3.1.0a1-py3-none-any.whl (1.1MB)
cython-3.1.0a1.tar.gz (3.0MB)