Book Image

Learning Cython Programming (Second Edition) - Second Edition

By : Philip Herron
Book Image

Learning Cython Programming (Second Edition) - Second Edition

By: Philip Herron

Overview of this book

Cython is a hybrid programming language used to write C extensions for Python language. Combining the practicality of Python and speed and ease of the C language it’s an exciting language worth learning if you want to build fast applications with ease. This new edition of Learning Cython Programming shows you how to get started, taking you through the fundamentals so you can begin to experience its unique powers. You’ll find out how to get set up, before exploring the relationship between Python and Cython. You’ll also look at debugging Cython, before moving on to C++ constructs, Caveat on C++ usage, Python threading and GIL in Cython. Finally, you’ll learn object initialization and compile time, and gain a deeper insight into Python 3, which will help you not only become a confident Cython developer, but a much more fluent Python developer too.
Table of Contents (14 chapters)
Learning Cython Programming Second Edition
About the Author
About the Reviewer

Chapter 4. Debugging Cython

Since Cython programs compile down to their native code, we cannot use the Python debugger to step through your code. We can, however, use GDB. GNU Project Debugger (GDB) is a cross platform debugger. Python plugin support was added in version 7.0, which was used to add the Cython support into gdb as a simple script; this means that you can seamlessly step through the C/C++ code into Cython and back again.

When it comes to language binding, it's good practice to keep interfaces as simple as possible. This will make debugging much simpler until you are happy with your bindings in terms of resource management or stability. I will iterate over some GDB and caveats examples.

In this chapter, we will cover the following topics:

  • Using GFB with Cython

  • Cython caveats