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19<div class="titlepage"><div><div><h2 class="title" style="clear: both">
20<a name="embedding.boost_python_import_hpp"></a><a class="link" href="boost_python_import_hpp.html" title="boost/python/import.hpp">boost/python/import.hpp</a>
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22<div class="toc"><dl class="toc">
23<dt><span class="section"><a href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.introduction">Introduction</a></span></dt>
24<dt><span class="section"><a href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.function_import">Function
25        <code class="computeroutput"><span class="identifier">import</span></code></a></span></dt>
26<dt><span class="section"><a href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.examples">Examples</a></span></dt>
27</dl></div>
28<div class="section">
29<div class="titlepage"><div><div><h3 class="title">
30<a name="embedding.boost_python_import_hpp.introduction"></a><a class="link" href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.introduction" title="Introduction">Introduction</a>
31</h3></div></div></div>
32<p>
33          Exposes a mechanism for importing python modules.
34        </p>
35</div>
36<div class="section">
37<div class="titlepage"><div><div><h3 class="title">
38<a name="embedding.boost_python_import_hpp.function_import"></a><a class="link" href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.function_import" title="Function import">Function
39        <code class="computeroutput"><span class="identifier">import</span></code></a>
40</h3></div></div></div>
41<pre class="programlisting"><span class="identifier">object</span> <span class="identifier">import</span><span class="special">(</span><span class="identifier">str</span> <span class="identifier">name</span><span class="special">);</span></pre>
42<div class="variablelist">
43<p class="title"><b></b></p>
44<dl class="variablelist">
45<dt><span class="term">Effects</span></dt>
46<dd><p>
47                Imports the module named by name.
48              </p></dd>
49<dt><span class="term">Returns</span></dt>
50<dd><p>
51                An instance of object which holds a reference to the imported module.
52              </p></dd>
53</dl>
54</div>
55</div>
56<div class="section">
57<div class="titlepage"><div><div><h3 class="title">
58<a name="embedding.boost_python_import_hpp.examples"></a><a class="link" href="boost_python_import_hpp.html#embedding.boost_python_import_hpp.examples" title="Examples">Examples</a>
59</h3></div></div></div>
60<p>
61          The following example demonstrates the use of import to access a function
62          in python, and later call it from within C++.
63        </p>
64<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iostream</span><span class="special">&gt;</span>
65<span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">string</span><span class="special">&gt;</span>
66
67<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>
68
69<span class="keyword">void</span> <span class="identifier">print_python_version</span><span class="special">()</span>
70<span class="special">{</span>
71  <span class="comment">// Load the sys module.</span>
72  <span class="identifier">object</span> <span class="identifier">sys</span> <span class="special">=</span> <span class="identifier">import</span><span class="special">(</span><span class="string">"sys"</span><span class="special">);</span>
73
74  <span class="comment">// Extract the python version.</span>
75  <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">version</span> <span class="special">=</span> <span class="identifier">extract</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&gt;(</span><span class="identifier">sys</span><span class="special">.</span><span class="identifier">attr</span><span class="special">(</span><span class="string">"version"</span><span class="special">));</span>
76  <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">version</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
77<span class="special">}</span>
78</pre>
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81<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
82<td align="left"></td>
83<td align="right"><div class="copyright-footer">Copyright © 2002-2005, 2015 David Abrahams, Stefan Seefeld<p>
84        Distributed under the Boost Software License, Version 1.0. (See accompanying
85        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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