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Learning Cython Programming (Second Edition)

Learning Cython Programming (Second Edition) - Second Edition

By : Philip Herron
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Learning Cython Programming (Second Edition)

Learning Cython Programming (Second Edition)

1 (1)
By: Philip Herron
Buy this Book

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 (8 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Cython Won't Bite
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1. Cython Won't Bite
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Installing Cython
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Getting started – Hello World
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Summary
2
2. Understanding Cython
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2. Understanding Cython
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Linking models
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Cython keyword – cdef
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Typedef and function pointers
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The public keyword
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Keyword cpdef
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Logging from C/C++ into Python
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Using Python ConfigParser from C/C++
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Callbacks from Python to C/C++
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Cython PXD
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Integration with build systems
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Summary
3
3. Extending Applications
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3. Extending Applications
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Cython pure Python code
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Compiling pure Python code
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Python garbage collector
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Extending Tmux
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Embedding Python
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Cythonizing struct cmd_entry
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Implementing a Tmux command
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Hooking everything together
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Summary
4
4. Debugging Cython
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4. Debugging Cython
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Using GDB with Cython
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Cython caveats
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Summary
5
5. Advanced Cython
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5. Advanced Cython
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Cython and C++
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C++ new and del keyword
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Overloading
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Templates
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Static class member attribute
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Calling C++ functions – Caveat
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Python distutils
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Python threading and GIL
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Cython keywords
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Messaging server
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Caveat on GIL
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Unit testing the native code
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Preventing subclassing
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Parsing large amounts of data
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Summary
6
6. Further Reading
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6. Further Reading
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Overview
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OpenMP support
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Compile time preprocessor
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Python 3
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PyPy
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AutoPXD
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Pyrex and Cython
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SWIG and Cython
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Cython and NumPy
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Numba versus Cython
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Parakeet and Numba
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Relevant Links
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Summary
7
Index
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Index

Installing Cython

Since Cython is a programming language, we must install its respective compiler, which just so happens to be the aptly named Cython.

There are many different ways to install Cython. The preferred one would be to use pip:

$ pip install Cython

This should work on both Linux and Mac. Alternatively, you can use your Linux distribution's package manager to install Cython:

$ yum install cython     # will work on Fedora and Centos
$ apt-get install cython # will work on Debian based systems.

For Windows, although there are a plethora of options available, following this wiki is the safest option to stay up-to-date: http://wiki.cython.org/InstallingOnWindows.

Emacs mode

There is an emacs mode available for Cython. Although the syntax is nearly the same as Python, there are differences that conflict in simply using Python-mode. You can grab cython-mode.el from the Cython source code (inside the Tools directory.) The preferred way of installing packages to emacs would be to use a package repository like MELPA:

To add the package repository to emacs, open your ~/.emacs configuration file and add:

(when (>= emacs-major-version 24)
  (require 'package)
  (add-to-list
   'package-archives
   '("melpa" . "http://melpa.org/packages/")
   t)
  (package-initialize))

Once you add this and reload your configuration to install the Cython mode, you can simply run:

'M-x package-install RET cython-mode'

Once this is installed, you can activate the mode by adding this into your emacs config file:

(require 'cython-mode)

You can activate the mode manually at any time with:

'M-x cython-mode RET'

Getting the code examples

Throughout this book, I intend to show real examples that are easy to digest in order to help you get a feel of the different things you can achieve with Cython. To access and download the code used, please clone this repository:

$ git clone git://github.com/redbrain/cython-book.git
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Learning Cython Programming (Second Edition)
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