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Feb 28, 2022 · Since starting work at Explosion, I’ve been trying to learn more about Cython. About 16% of spaCy’s codebase is Cython, so I decided to pick up a book and learn from that. I did a few example projects and started thinking: now that types are cool in python, why don’t more people use Cython? In case you’re unfamiliar with Cython, here’s my incremental and oversimplified explanation of ...
- Overview
- Installation:
- License:
- Contributing:
- Differences to other Python compilers
- Get the full source history:
- The following is from Pyrex:
Cython is a Python compiler that makes writing C extensions for Python as easy as Python itself. Cython is based on Pyrex, but supports more cutting edge functionality and optimizations.
Cython translates Python code to C/C++ code, but additionally supports calling C functions and declaring C types on variables and class attributes. This allows the compiler to generate very efficient C code from Cython code.
This makes Cython the ideal language for wrapping external C libraries, and for fast C modules that speed up the execution of Python code.
•Official website: https://cython.org/
•Documentation: https://docs.cython.org/
•Github repository: https://github.com/cython/cython
If you already have a C compiler, just run following command:
otherwise, see the installation page.
The original Pyrex program was licensed "free of restrictions" (see below). Cython itself is licensed under the permissive Apache License.
See LICENSE.txt.
Want to contribute to the Cython project? Here is some help to get you started.
Started as a project in the early 2000s, Cython has outlived most other attempts at producing static compilers for the Python language.
Similar projects that have a relevance today include:
•PyPy, a Python implementation with a JIT compiler.
•Pros: JIT compilation with runtime optimisations, fully language compliant, good integration with external C/C++ code
•Cons: non-CPython runtime, relatively large resource usage of the runtime, limited compatibility with CPython extensions, non-obvious performance results
•Numba, a Python extension that features a JIT compiler for a subset of the language, based on the LLVM compiler infrastructure (probably best known for its clang C compiler). It mostly targets numerical code that uses NumPy.
Note that Cython used to ship the full version control repository in its source distribution, but no longer does so due to space constraints. To get the full source history from a downloaded source archive, make sure you have git installed, then step into the base directory of the Cython source distribution and type:
This is a development version of Pyrex, a language for writing Python extension modules.
For more info, take a look at:
•Doc/About.html for a description of the language
•INSTALL.txt for installation instructions
•USAGE.txt for usage instructions
•Demos for usage examples
This means you need to do more than just compile a section of python to Cython. You need to re-write the performance-critical bits while thinking about your data-structures from C/C++ point of view. Cython lets you blend C/C++ with python in a seamless manner but you still need to think about stuff like data-locality, memory allocation etc..
Aug 19, 2021 · Python is a programming language. It is not a compiler or interpreter in itself. Any improvements in Python language specifications or new features would result in nothing till the time those are incorporated in the interpreters or compilers. CPython. Talking about CPython, it is the default implementation of Python specifications.
Feb 18, 2023 · Learn How to Use Cython to Compile Python Code into Fast and Efficient Native Binaries. ... Python is a high-level interpreted language, which makes it easy to use and learn. However, it can be ...
Aug 6, 2023 · Cython is an optimizing static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex, a Python-like language for rapidly and easily writing Python extension modules). It provides developers the ability to write Python code that calls to and from C or C++ natively.
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Jan 6, 2023 · Cython code looks a lot like Python code, by design. If you feed the Cython compiler a Python program (Python 2.x and Python 3.x are both supported), Cython will accept it as-is, but none of ...
