c++ python交互之boost.python 简集之Map处理

<p>C++中经常使用map来存储键值对，本章介绍python如何传递或返回c++ map键值对</p>
<p></p>
<p><strong>c++源码:src.cpp</strong></p>
<p>#include &lt;iostream&gt;<br>
#include &lt;string&gt;<br>
#include &lt;map&gt;<br>
using namespace std;<br><br>
typedef map&lt;string,int&gt; simap;<br><br>
simap A()<br>
{<br>
simap m;<br>
m["aaa"] = 1;<br>
m["bbb"] = 2;<br>
m["ccc"] = 3;<br>
m["ddd"] = 4;<br>
m["eee"] = 5;<br>
m["fff"] = 6;<br><br>
return m;<br>
}</p>
<p><strong><br></strong>
</p>
<p><strong>为python做转换代码,src4py.cpp</strong>
</p>
<p>#include &lt;boost/python.hpp&gt; <br>
#include &lt;boost/python/suite/indexing/map_indexing_suite.hpp&gt;<br>
#include "src.cpp"<br>
using namespace boost::python;<br>
BOOST_PYTHON_MODULE(test)<br>
{<br><br>
class_&lt;simap&gt;("pySImap")<br>
.def( map_indexing_suite&lt;simap&gt;() )<br>
;<br><br>
def("a",A);<br>
}</p>
<p><strong><br></strong>
</p>
<p><strong>python调用端代码</strong>
: test.py</p>
<p>import test<br>
mapcontainer = test.pySImap()<br>
mapcontainer = test.a()<br><br>
for i in mapcontainer:<br>
print i<br><br>
dict = {}<br>
for i in mapcontainer:<br>
key = i.key()<br>
dict[key] = i.data()<br>
print dict<br></p>