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(python2.1-ext.info)Writing Extensions in C++

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Writing Extensions in C++
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It is possible to write extension modules in C++.  Some restrictions
apply.  If the main program (the Python interpreter) is compiled and
linked by the C compiler, global or static objects with constructors
cannot be used.  This is not a problem if the main program is linked by
the C++ compiler.  Functions that will be called by the Python
interpreter (in particular, module initalization functions) have to be
declared using `extern "C"'.  It is unnecessary to enclose the Python
header files in `extern "C" {...}' -- they use this form already if the
symbol `__cplusplus' is defined (all recent C++ compilers define this
symbol).