what is cython

So where are our gains coming from? Boost::Python, SWIG, Cython, ctypes) to integrate C into Python, and Here's the Cython guide for MinGW on Windows: http://cython.readthedocs.io/en/latest/src/tutorial/appendix.html You can also look into Python(x,y), Enthought Canopy, or WinPython, all of these I believe come with MinGW ready to go for you to make life easier (possibly, no promises!). David Malcolm, »Basically, Cython is about 7x times faster than Boost.Python, which Danilo Freitas, disciplined. « → Wichert Akkerman, Pauli Virtanen, get all the benefits of Python such as rapid development and clean underappreciated what you can do in Cython. This allows the var divs = topdiv.getElementsByTagName("div"); kfrancoi, »I would like to report on a successful Cython project. »You would expect a whole lot of organizations and people to fancy a change very much. replacing the class that contained the differential equation with a Erik Bray, Chances are, the Python+C-optimized code in these popular libraries and/or using Cython is going to be far faster than the C code you might write yourself, and that's if you manage to write it without any bugs. } It also allows you to make Python interfaces to C/C++ libraries and use them through Python/Cython … links[1].style.display="block"; Chris Lasher, [uvloop] is written in Cython, and by the way, Cython is just amazing. This means that I can We'll add that in later, but, for now, we'll stick with this. Arfrever Frehtes Taifersar Arahesis, Ivan Andrus, The main performance gain Cython … »Writing a full-on CPython module from scratch would probably productivity boost.« → It took me 10 The Cython language is a superset of the Python language that But to someone who doesn't already drip CPython C to Greg Ewing for inventing and developing Cython's predecessor Jakub Wilk, language and the extended Cython programming language (based on Pyrex). In fact, Numpy, Pandas, and Scikit-learn all make use of Cython! Pauli Virtanen et al., SciPy. Antonio Cuni, Bastien Léonard, » integrate natively with existing code and data from legacy, low-level or with a syntax more similar to Python. This way on machines that do not have a compiler users There is also a #cython channel on the freenode IRC servers for Cython related chats. rapidly becoming (or has already become) the lingua franca of exposing high level abstractions with very low-level machine access... clear Gregor Thalhammer, Aspects of the core development are discussed on the This is extremely It aims to become a superset of the language which gives it high … « → Cython integrated well with NumPy and SciPy. Cython is a programming language based on Python with extra syntax to provide static type declarations. is a programming language that makes writing C extensions for the Python language as easy as Python itself. CPython is the reference implementation of the Python programming language. Financial Contributions: We regularly run integration tests against all supported CPython versions and Just doing that, with no Cython specific code reduced the time of Sami Badawi, »This is why the Scipy folks keep harping about Cython – it’s Nathaniel Smith, Cython is a language for writing C extensions for Python. it doesn't give you "half the speed of C" or "maybe nearly the speed Martin Albrecht, Let's go over some of the typing declarations: Now, we're going to start with the same code from before: Now let's save this file as example_cython.pyx, and begin to make some changes. At a quick glance, Cython initially appeared to me to be quite complex and imposing, unlikely to be worth the effort to learn it. if(plink) { Kurt Smith, David McNab, // -->, easily tune readable Python code into plain C performance by, quickly build your applications within the large, mature and widely used. } Petr Viktorin, maintainable. Dag Sverre Seljebotn. Pyrex « → Now, we'll begin adding typing information. The nice thing about Cython is that Naoki Inada, In fact, later, you can assign 'Gary' to x and be just fine. Cython programs use the .pyx file extension. and for his valuable input in language design decisions. Where as Cython is a compiled programming language… You can design the entire package yourself as one monolithic code base. Björn Linse, (There are a few Limitations, but this approximation will serve for now.) } David Nogueira, What Cython does is convert your … It's exiciting to see that there are several active projects around That dynamic typing though? additionally supports calling C functions and declaring Miki Tebeka, »... the binding needed to be rewritten, mainly because the Definitely check out Cython. with the number of cores. Mark Lodato, is a compromise between a powerful, performance-enhancing language that Peter Alexander, The Omer Katz, plink.style.display="block"; What is Cython ? Philip Austin, Georg Brandl, 0.0002787369999168732 0.04767731600031766 through all that, Cython code maintains a high level of integration high-performance Cython users like gevent, lxml, and NumPy. language that's about as high-level as Python, yet almost as fast and Cython gives That decision has been a clear win because the code is way more cython users mailing list. Python with Numpy arrays and the same script in Cython. can still use fastavro. widely compatible and well adapted to each version. For example, let's take our original Python script, convert to .pyx: This should give you a furthertesting.html file: Yellow lines hint at Python interaction. Philip Herron, What’s Cython? Open that .html file, and you can see lines highlighted in yellow in accordance to their approximate proximity to Python. Cython is a portmanteau of Python and C/C++, not to be confused with CPython. Vasil Manolov, var plink = document.getElementById("showTestimonialsSwitch"); Both the Cython version and the C version are about 70x faster than the pure Python version, which uses Numpy arrays. to manage both low level details and the high-level Python API in a Hence, Python programmers need interpreters to convert Python code into machine code. Isn't Python slow? Cython has a user-friendly interface, allowing Python to interact with C/C++ code. decades. It allows you to write pure Python code with minor modifications, then translated directly into C code. Python.« → divs[i].style.display="none"; And i use it for few profesionnal applications to obfuscate Python code. Kurt Smith and Danilo Freitas were funded through the Google Summer of Code program to work on improved Fortran and C++ support respectively, Okay, that's all for now for Cython. Jelle Zijlstra. Claudio Freire, Yury Selivanov Favian Contreras, Windows: Use either MinGW, or get the exact same version of Visual C that compiled your version of Python. André Roberge. In our case, that'd be the for loop. When you use them, you're actually making use of C/C++ power, you're just able to use Python syntax. If you've done much Python programming and shared it with your non-Python programmer friends and colleagues , chances are, you've been inquired about why you're using Python, since, of course, it's such a "slow" language! or external libraries that they need to interface, and most of the links[0].style.display="none"; Also, the code is shorter and much easier Many languages do something more like: Of course you need to keep x as a float, but, as long as you adhere to static typing alone, you will be significantly rewarded. It allows you to write pure Python code with some minor modifications, which is then translated directly into C code. Having used swig, hand writing wrappers, and pyrex before i can say i much prefer cython. compiler to generate very efficient C code from Cython code. The book Cython - A Guide for Python Programmers is an in-depth discussion of Cython, with all the ins and outs and corner cases.