I don't know if this is any help, but pdb is showing me this:
{{{ (Pdb) p x509name <X509Name object '/CN=\xFD\xAE\x99\x97\x9D\xB0\xFD\xA2\x97\xB7\x91\xA8\xFD\xA9\x9B\xA6\x9D\xB9'> }}}
I don't know if this is any help, but pdb is showing me this:
{{{ xAE\x99\ x97\x9D\ xB0\xFD\ xA2\x97\ xB7\x91\ xA8\xFD\ xA9\x9B\ xA6\x9D\ xB9'>
(Pdb) p x509name
<X509Name object '/CN=\xFD\
}}}