🌐
Cython
cython.org
Cython: C-Extensions for Python
Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex).

programming language compatible with Python

Cython (/ˈsaɪθɒn/) is a superset of the programming language Python, which allows developers to write Python code (with optional, C-inspired syntax extensions) that yields performance comparable to that of C. Cython is … Wikipedia
Factsheet
Developer Robert Bradshaw, Stefan Behnel, et al.
First appeared 28 July 2007; 18 years ago (2007-07-28)
Stable release 3.2.2 (30 November 2025; 13 days ago (30 November 2025))
Factsheet
Developer Robert Bradshaw, Stefan Behnel, et al.
First appeared 28 July 2007; 18 years ago (2007-07-28)
Stable release 3.2.2 (30 November 2025; 13 days ago (30 November 2025))
🌐
Wikipedia
en.wikipedia.org › wiki › Cython
Cython - Wikipedia
November 7, 2025 - Cython (/ˈsaɪθɒn/) is a superset of the programming language Python, which allows developers to write Python code (with optional, C-inspired syntax extensions) that yields performance comparable to that of C. Cython is a compiled language that is typically used to generate CPython extension ...
Discussions

Writing entire programs in Cython
If you want speed in your code, consider straight up learning c or c++ More on reddit.com
🌐 r/Python
95
108
November 23, 2021
Does anyone actually use PyPy or Cython? : Python
I have been reading a lot about these tools recently and wondered if they are used in production, especially when building a backend with Python.... More on old.reddit.com
🌐 r/Python
Any good IDE for cython?

Well, PyCharm is often recommended but you have that one already.

Then there is the VI vs. Emacs thing. You have tried Emacs, so you might as well try the other side of that equation.

What about something like Atom or Sublime with various plugins? Those are quite popular and about half way between the first 2 options listed here.

What OS are you running as well? That can make a difference. Ultimately though, this is a personal preference thing.

More on reddit.com
🌐 r/learnpython
4
6
March 27, 2016
Anyone ever tried interfacing cython with a deep learning/ machine learning library?

It doesn't matter what the backed is. Unless you're interfacing directly with c (like, .h files), cython generates a huge amount of wrapping code. Look at examples of using cython with the annotation flag and the html file it generates. And also, just read about what cython is, because your question doesn't make a lot of sense.

More on reddit.com
🌐 r/learnpython
1
2
September 10, 2016
🌐
GitHub
github.com › cython › cython
GitHub - cython/cython: The most widely used Python to C compiler
Cython is an optimising Python compiler that makes writing C extensions for Python as easy as Python itself.
Starred by 10.5K users
Forked by 1.6K users
Languages   Python 51.9% | Cython 38.3% | C 9.4% | C++ 0.3% | Shell 0.1% | Starlark 0.0%
🌐
Cython
cython.readthedocs.io › en › latest › src › tutorial › cython_tutorial.html
Basic Tutorial — Cython 3.3.0a0 documentation
But Cython is much more than that, because parameters and variables can be declared to have C data types. Code which manipulates Python values and C values can be freely intermixed, with conversions occurring automatically wherever possible.
🌐
Reddit
reddit.com › r/python › writing entire programs in cython
r/Python on Reddit: Writing entire programs in Cython
November 23, 2021 -

Hello everyone. I recently figured out how to use cython to speed up python programs, but there's one idea I have which is using cython to completely write python programs.

Cython is around 6.5 times faster than python (according to google) and nearly every function and module in python can be run in cython (if I'm correct), so I see why not to write my python scripts in cython completely and call them in regular python.

Is this a good idea? Would it be better to stick to regular python and only use cython when necessary? Or should I just use cython for every script I want to write?

Thanks in advance.

🌐
PyPI
pypi.org › project › Cython
Cython · PyPI
2 weeks ago - The Cython compiler for writing C extensions in the Python language.
      » pip install Cython
    
Published   Nov 30, 2025
Version   3.2.2
Find elsewhere
🌐
Peterbaumgartner
peterbaumgartner.com › blog › an introduction to just enough cython to be useful
An Introduction to Just Enough Cython to be Useful | Peter Baumgartner
March 1, 2022 - After cpdef you’ll see the the int type, which in Cython syntax declares the return type of the function. One thing you’ll notice is that the types are in a different order than they are if you’re used to typing things for mypy in python.
🌐
Cython
cython.readthedocs.io
Welcome to Cython's Documentation — Cython 3.3.0a0 ...
This version of the documentation is for the latest and greatest in-development branch of Cython.
🌐
Anaconda.org
anaconda.org › anaconda › cython
Cython - conda install
2 weeks ago - Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language.
🌐
spaCy
spacy.io › api › cython
Cython Architecture · spaCy API Documentation
Cython gives you many choices of sequences: you could have a Python list, a numpy array, a memory view, a C++ vector, or a pointer. Pointers are preferred, because they are fastest, have the most explicit semantics, and let the compiler check your code more strictly.
🌐
Google Groups
groups.google.com › g › cython-users
cython-users - Google Groups
Compilation of PYX (cython) -> PYI (stub) file converters.
🌐
Codedamn
codedamn.com › news › python
What is Cython? How to use it? Making a small project with it
October 31, 2022 - Cython is a programming language built on top of Python acting as a form of a superset.
🌐
Towards Data Science
towardsdatascience.com › home › latest › run your python code up to 80x faster using the cython library
Run Your Python Code up to 80x Faster Using the Cython Library | Towards Data Science
September 15, 2025 - If you haven’t heard of Cython, it’s a superset of Python designed to provide C-like performance with code written mainly in Python. It allows for converting Python code into C code, which can then be compiled into shared libraries that ...
🌐
HPC Cineca
hpc.cineca.it › https://www.hpc.cineca.it › systems › software › classification › tool › cython
Cython | HPC Cineca
November 14, 2023 - Cython gives you the combined power of Python and C to let you write Python code that calls back and forth from and to C or C++ code natively at any point.Easily tune readable Python code into plain C performance by adding static type ...
🌐
JetBrains
jetbrains.com › help › pycharm › cython.html
Cython support | PyCharm Documentation
July 8, 2025 - PyCharm provides initial Cython support out of the box. PyCharm recognizes .pyx, .pxd, and .pxi files, and allows you to edit them.
🌐
SourceForge
sourceforge.net › projects › cython.mirror
Cython download | SourceForge.net
Cython is an optimizing static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself.
🌐
Medium
medium.com › stinopys › running-your-first-cython-code-b223297fe61b
Running 🚀 your first Cython code | by Olegh Bondarenko | Stinopys | Medium
February 10, 2025 - Cython (not to be confused with CPython) is an exciting opportunity to combine the functionality, speed of writing, and elegance of Python…
🌐
InfoWorld
infoworld.com › home › software development › programming languages › python
What is Cython? Python at the speed of C | InfoWorld
January 6, 2023 - A superset of Python that compiles to C, Cython combines the ease of Python with the speed of native code. Here's a quick guide to making the most of Cython in your Python programs.
🌐
Python⇒Speed
pythonspeed.com › articles › cython-limitations
Some reasons to avoid Cython
January 22, 2025 - Cython is an easy way to speed up your Python code—but it doesn’t scale well to large projects.
🌐
GitHub
github.com › cython › cython › releases
Releases · cython/cython
The most widely used Python to C compiler. Contribute to cython/cython development by creating an account on GitHub.
Author   cython