At present, class Py::String can be constructed from a const char* or a const std::string&, but not from const char* and a size_t. We should have a version available that takes advantage of PyString_FromStringAndSize() by taking a length argument. This would allow construction from a non-null-terminated character array (especially a subset of such an array). Also, the Py::String constructor taking a const std::string& as an argument should not use the c_str() function to call PyString_FromString(). Rather, it should call PyString_FromStringAndSize( str.data(), str.length() ) // or str.size() since we've already gone through the trouble of figuring out the length of the contained string. -- Steven E. Harris Primus Knowledge Solutions, Inc. http://www.primus.com