unicode issue

[gentlestone]

Thx for useful advices. They seems to be very clever.

Thx to dajngo users comunity, I've got a nice solution, how to avoid
unicode problems in doctests:

    """
    >>> Osoba(meno = "Ľudmila".decode('utf-8'), priezvisko =
"Šafářová".decode('utf-8'))
    <Osoba: Šafářová Ľudmila>
    """

It is - do not use unicode string at all. Instead of it create a
unicode object by explicitly decoding a bytestring using the proper
codec.