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Learning Cython Programming (Second Edition)

You're reading from   Learning Cython Programming (Second Edition) Expand your existing legacy applications in C using Python

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Product type Paperback
Published in Feb 2016
Publisher Packt
ISBN-13 9781783551675
Length 110 pages
Edition 2nd Edition
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Author (1):
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Philip Herron Philip Herron
Author Profile Icon Philip Herron
Philip Herron
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Toc

Embedding Python


Now that we have files being compiled, we need to initialize Python. Our module. Tmux is a forked server that clients connect to, so try not to think of it as a single-threaded system. It's a client and a server, so all commands are executed on the server. Now, let's find where the event loop is started in the server, and initialize and finalize the server here so that it's done correctly. Looking at int server_start(int lockfd, char *lockfile), we can add the following:

#ifdef HAVE_PYTHON
  Py_InitializeEx (0);
#endif
  server_loop();
#ifdef HAVE_PYTHON
  Py_Finalize ();
#endif

Python is now embedded into the Tmux server. Notice that instead of using simply Py_Initialize, I used Py_InitializeEx (0). This replicates the same behavior, but doesn't start up normal Python signal handlers. Tmux has its own signal handlers, so I don't want to override them. It's probably a good idea when extending established applications such as this to use Py_InitializeEx (0), since they generally...

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