print_error_text() doesn't encode the filename anymore Use aslo PyUnicode_FromFormat() to format the line so only one call to PyFile_WriteObject() is needed. tb_displayline() of Python/traceback.c has similar implementation.

#include "Python.h"

#ifndef PLATFORM
#define PLATFORM "unknown"
#endif

const char *
Py_GetPlatform(void)
{
	return PLATFORM;
}