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- <p>
- There are two basic models for combining C++ and Python:
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- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem">
- <a href="http://www.python.org/doc/current/ext/intro.html" target="_top">extending</a>,
- in which the end-user launches the Python interpreter executable and
- imports Python “extension modules” written in C++. Think of taking
- a library written in C++ and giving it a Python interface so Python programmers
- can use it. From Python, these modules look just like regular Python
- modules.
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- <a href="http://www.python.org/doc/current/ext/embedding.html" target="_top">embedding</a>,
- in which the end-user launches a program written in C++ that in turn
- invokes the Python interpreter as a library subroutine. Think of adding
- scriptability to an existing application.
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- </ul></div>
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- The key distinction between extending and embedding is the location of the
- C++ <code class="computeroutput"><span class="identifier">main</span><span class="special">()</span></code>
- function: in the Python interpreter executable, or in some other program,
- respectively. Note that even when embedding Python in another program, <a href="http://www.python.org/doc/current/ext/extending-with-embedding.html" target="_top">extension
- modules are often the best way to make C/C++ functionality accessible to
- Python code</a>, so the use of extension modules is really at the heart
- of both models.
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- Except in rare cases, extension modules are built as dynamically-loaded libraries
- with a single entry point, which means you can change them without rebuilding
- either the other extension modules or the executable containing <code class="computeroutput"><span class="identifier">main</span><span class="special">()</span></code>.
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- <td align="right"><div class="copyright-footer">Copyright © 2002-2015 David
- Abrahams, Stefan Seefeld<br>Copyright © 2002-2015 David Abrahams, Stefan Seefeld<p>
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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