You may get more help here: http://mail.python.org/mailman/listinfo/cplusplus-sig The code you quote is still the same on the boost svn trunk. Maybe if you post a minimal reproducer someone using Python 3 will pick this up. (I use Boost.Python only with Python 2.) Ralf ----- Original Message ----

From: Steve M. Robbins <steve@sumost.ca> To: boost@lists.boost.org Cc: debian-python@lists.debian.org Sent: Tue, April 5, 2011 10:53:38 PM Subject: [boost] Python 3.2: convert convert PyObject* to PyUnicodeObject*?

Hi,

Boost 1.46.1 fails to build with Python 3.2 on linux (Debian). The build fails with:

error: cannot convert -F¡PyObject*¢ to ¡PyUnicodeObject*¢ for argument ¡1¢ to ¡Py_ssize_t PyUnicodeUCS4_AsWideChar(PyUnicodeObject*, wchar_t*, Py_ssize_t)¢-A

at this code:

static std::wstring extract(PyObject* intermediate) { std::wstring result(::PyObject_Length(intermediate), L' '); if (!result.empty()) { int err = PyUnicode_AsWideChar( intermediate , &result[0] , result.size());

if (err == -1) throw_error_already_set(); } return result; }

Is there an easy fix?

Thanks, -Steve