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Hi, I'm Stefan!

I maintain and enhance the Cython compiler for Python, the lxml XML toolkit, some features in CPython (including performance topics, C-API evolution, and the XML support in the standard library), and generally help to make Python a great language for all your processing needs. :)

You can help me with your sponsorship to build Better Software for You!

Repositories that I maintain, which will benefit from your donations:


This would allow me to renovate the house that I live in and turn it into an energy and CO₂ efficient home.

Current sponsors 22

Private Sponsor
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Past sponsors 51

Featured work

  1. cython/cython

    The most widely used Python to C compiler

    Python 9,194
  2. lxml/lxml

    The lxml XML toolkit for Python

    Python 2,627
  3. python/cpython

    The Python programming language

    Python 61,269
  4. scoder/lupa

    Lua in Python

    Python 995
  5. scoder/quicktions

    Fast fractions reimplementation in Cython

    Python 35
  6. scoder/fastrlock

    A fast RLock implementation for CPython

    Python 23

2% towards 1024 monthly sponsors goal

@foosel @tiangolo
@daimon99 @pzhlkj6612 @encukou @tatuylonen @mkoeppe

foosel and 20 others sponsor this goal

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