The curses module (only since Python 3.3), locale.strcoll(), locale.strxfrm(), time.strftime() and imp.NullImporter() (only on Windows) accept embedded null characters, whereas they convert the Unicode string to a wide character (wchar_t*) string.

The problem is that the null character truncates the string. Example:


>>> locale.strxfrm('a')
'a'
>>> locale.strxfrm('a\0b')
'a'

Attached patch fixes these functions. I wrote the patch for Python 3.3.