Skip main navigation

£199.99 £139.99 for one year of Unlimited learning. Offer ends on 28 February 2023 at 23:59 (UTC). T&Cs apply

Find out more

Hands-on: creating a simple Cython extension

In this exercise you will create a compiled Cython extension from a Python module.
© CSC - IT Center for Science Ltd.

Simple Cython extension

The code for this exercise is located under cython/simple-extension

~/hpc-python$ cd cython/simple-extension

Create a simple Cython module (you can name it e.g. cyt_module.pyx)
containing the following function:

def subtract(x, y):
result = x - y
return result

Create then a file for building the extension module.
Try to utilize the module e.g. as

from cyt_module import subtract

subtract(4.5, 2)

in interactive interpreter or in a simple script. Try different argument types.

© CSC - IT Center for Science Ltd.
This article is from the free online

Python in High Performance Computing

Created by
FutureLearn - Learning For Life

Our purpose is to transform access to education.

We offer a diverse selection of courses from leading universities and cultural institutions from around the world. These are delivered one step at a time, and are accessible on mobile, tablet and desktop, so you can fit learning around your life.

We believe learning should be an enjoyable, social experience, so our courses offer the opportunity to discuss what you’re learning with others as you go, helping you make fresh discoveries and form new ideas.
You can unlock new opportunities with unlimited access to hundreds of online short courses for a year by subscribing to our Unlimited package. Build your knowledge with top universities and organisations.

Learn more about how FutureLearn is transforming access to education