150 lines
9.4 KiB
HTML
150 lines
9.4 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Boost.Python Tutorial</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<link rel="home" href="index.html" title="Boost.Python Tutorial">
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<link rel="next" href="tutorial/hello.html" title="Building Hello World">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr><td valign="top"><img alt="" width="" height="" src="../images/boost.png"></td></tr></table>
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<div class="spirit-nav"><a accesskey="n" href="tutorial/hello.html"><img src="../images/next.png" alt="Next"></a></div>
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<div class="article">
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<div class="titlepage">
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<div>
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<div><h2 class="title">
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<a name="tutorial"></a>Boost.Python Tutorial</h2></div>
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<div><div class="authorgroup">
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<div class="author"><h3 class="author">
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<span class="firstname">Joel</span> <span class="surname">de Guzman</span>
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</h3></div>
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<div class="author"><h3 class="author">
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<span class="firstname">David</span> <span class="surname">Abrahams</span>
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</h3></div>
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</div></div>
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<div><p class="copyright">Copyright © 2002-2005 Joel
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de Guzman, David Abrahams</p></div>
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<div><div class="legalnotice">
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<a name="tutorial.legal"></a><p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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</p>
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</div></div>
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</div>
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<hr>
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</div>
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<div class="toc">
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<p><b>Table of Contents</b></p>
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<dl class="toc">
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<dt><span class="section"><a href="index.html#tutorial.quickstart">QuickStart</a></span></dt>
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<dt><span class="section"><a href="tutorial/hello.html">Building Hello World</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html">Exposing Classes</a></span></dt>
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<dd><dl>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.constructors">Constructors</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.class_data_members">Class Data Members</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.class_properties">Class Properties</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.inheritance">Inheritance</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.class_virtual_functions">Class Virtual
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Functions</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.virtual_functions_with_default_i">Virtual
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Functions with Default Implementations</a></span></dt>
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<dt><span class="section"><a href="tutorial/exposing.html#tutorial.exposing.class_operators_special_function">Class
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Operators/Special Functions</a></span></dt>
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</dl></dd>
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<dt><span class="section"><a href="tutorial/functions.html">Functions</a></span></dt>
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<dd><dl>
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<dt><span class="section"><a href="tutorial/functions.html#tutorial.functions.call_policies">Call Policies</a></span></dt>
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<dt><span class="section"><a href="tutorial/functions.html#tutorial.functions.overloading">Overloading</a></span></dt>
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<dt><span class="section"><a href="tutorial/functions.html#tutorial.functions.default_arguments">Default Arguments</a></span></dt>
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<dt><span class="section"><a href="tutorial/functions.html#tutorial.functions.auto_overloading">Auto-Overloading</a></span></dt>
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</dl></dd>
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<dt><span class="section"><a href="tutorial/object.html">Object Interface</a></span></dt>
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<dd><dl>
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<dt><span class="section"><a href="tutorial/object.html#tutorial.object.basic_interface">Basic Interface</a></span></dt>
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<dt><span class="section"><a href="tutorial/object.html#tutorial.object.derived_object_types">Derived Object
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types</a></span></dt>
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<dt><span class="section"><a href="tutorial/object.html#tutorial.object.extracting_c_objects">Extracting C++
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objects</a></span></dt>
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<dt><span class="section"><a href="tutorial/object.html#tutorial.object.enums">Enums</a></span></dt>
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<dt><span class="section"><a href="tutorial/object.html#tutorial.object.creating_python_object">Creating <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">python</span><span class="special">::</span><span class="identifier">object</span></code>
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from <code class="computeroutput"><span class="identifier">PyObject</span><span class="special">*</span></code></a></span></dt>
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</dl></dd>
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<dt><span class="section"><a href="tutorial/embedding.html">Embedding</a></span></dt>
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<dd><dl><dt><span class="section"><a href="tutorial/embedding.html#tutorial.embedding.using_the_interpreter">Using the interpreter</a></span></dt></dl></dd>
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<dt><span class="section"><a href="tutorial/iterators.html">Iterators</a></span></dt>
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<dt><span class="section"><a href="tutorial/exception.html">Exception Translation</a></span></dt>
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<dt><span class="section"><a href="tutorial/techniques.html">General Techniques</a></span></dt>
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<dd><dl>
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<dt><span class="section"><a href="tutorial/techniques.html#tutorial.techniques.creating_packages">Creating Packages</a></span></dt>
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<dt><span class="section"><a href="tutorial/techniques.html#tutorial.techniques.extending_wrapped_objects_in_pyt">Extending
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Wrapped Objects in Python</a></span></dt>
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<dt><span class="section"><a href="tutorial/techniques.html#tutorial.techniques.reducing_compiling_time">Reducing
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Compiling Time</a></span></dt>
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</dl></dd>
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</dl>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="tutorial.quickstart"></a><a class="link" href="index.html#tutorial.quickstart" title="QuickStart">QuickStart</a>
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</h2></div></div></div>
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<p>
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The Boost Python Library is a framework for interfacing Python and C++. It
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allows you to quickly and seamlessly expose C++ classes functions and objects
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to Python, and vice-versa, using no special tools -- just your C++ compiler.
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It is designed to wrap C++ interfaces non-intrusively, so that you should not
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have to change the C++ code at all in order to wrap it, making Boost.Python
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ideal for exposing 3rd-party libraries to Python. The library's use of advanced
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metaprogramming techniques simplifies its syntax for users, so that wrapping
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code takes on the look of a kind of declarative interface definition language
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(IDL).
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</p>
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<h3>
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<a name="tutorial.quickstart.h0"></a>
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<span class="phrase"><a name="tutorial.quickstart.hello_world"></a></span><a class="link" href="index.html#tutorial.quickstart.hello_world">Hello
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World</a>
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</h3>
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<p>
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Following C/C++ tradition, let's start with the "hello, world". A
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C++ Function:
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</p>
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<pre class="programlisting"><span class="keyword">char</span> <span class="keyword">const</span><span class="special">*</span> <span class="identifier">greet</span><span class="special">()</span>
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<span class="special">{</span>
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<span class="keyword">return</span> <span class="string">"hello, world"</span><span class="special">;</span>
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<span class="special">}</span>
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</pre>
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<p>
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can be exposed to Python by writing a Boost.Python wrapper:
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</p>
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<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">python</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="identifier">BOOST_PYTHON_MODULE</span><span class="special">(</span><span class="identifier">hello_ext</span><span class="special">)</span>
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<span class="special">{</span>
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">python</span><span class="special">;</span>
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<span class="identifier">def</span><span class="special">(</span><span class="string">"greet"</span><span class="special">,</span> <span class="identifier">greet</span><span class="special">);</span>
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<span class="special">}</span>
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</pre>
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<p>
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That's it. We're done. We can now build this as a shared library. The resulting
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DLL is now visible to Python. Here's a sample Python session:
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</p>
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<pre class="programlisting"><span class="special">>>></span> <span class="keyword">import</span> <span class="identifier">hello_ext</span>
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<span class="special">>>></span> <span class="keyword">print</span> <span class="identifier">hello_ext</span><span class="special">.</span><span class="identifier">greet</span><span class="special">()</span>
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<span class="identifier">hello</span><span class="special">,</span> <span class="identifier">world</span>
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</pre>
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<div class="blockquote"><blockquote class="blockquote"><p>
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<span class="emphasis"><em><span class="bold"><strong>Next stop... Building your Hello World module
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from start to finish...</strong></span></em></span>
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</p></blockquote></div>
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</div>
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"><p><small>Last revised: April 13, 2021 at 16:26:09 GMT</small></p></td>
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<td align="right"><div class="copyright-footer"></div></td>
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</tr></table>
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<hr>
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<div class="spirit-nav"><a accesskey="n" href="tutorial/hello.html"><img src="../images/next.png" alt="Next"></a></div>
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</body>
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</html>
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