[PATCH 0 of 6] Port of hg's C modules to py3k

[Michael Tharp]

On 06/08/2010 01:57 PM, Renato Cunha wrote:
> Main sources of incompatibility were:
>
>   1. The PyString* functions, which are gone for good;
>   2. The PyInt_* functions, which are also gone for good;
>   3. The module initialization functions&  conventions, which have changed.

I wrote some macros to ease the transition without having nearly as many 
#ifdef/#else/#endif blocks, maybe you can borrow some ideas:

http://hg.rpath.com/rmake-2.0/file/fe7aaf43bc5e/rmake/lib/pycompat.h

The most useful bits are probably the PYBYTES_Foo macros which switch 
between PyString and PyBytes as appropriate. There's also 
PYMODULE_DECLARE which takes care of much of the (varying) boilerplate 
in creating a module, and the less ambitious PYMODULE_INIT/CREATE/RETURN 
which PYMODULE_DECLARE is built from.

You can see examples of the PYMODULE_ macros (and others) here:
http://hg.rpath.com/conary/file/8b23b6c97774/conary/lib/misc.c
http://hg.rpath.com/rmake-2.0/file/fe7aaf43bc5e/rmake/lib/osutil.c

-- m. tharp