def force_unicode(s, encoding='utf-8', strings_only=False, errors='strict'):
    # Handle the common case first, saves 30-40% in performance when s
    # is an instance of unicode. This function gets called often in that
    # setting.
    if isinstance(s, unicode):
        return s
    if strings_only and is_protected_type(s):
        return s
    try:
        if not isinstance(s, basestring,):
            if hasattr(s, '__unicode__'):
                s = unicode(s)
            else:
                try:
                    s = unicode(str(s), encoding, errors)
                except UnicodeEncodeError:
                    if not isinstance(s, Exception):
                        raise
                    # If we get to here, the caller has passed in an Exception
                    # subclass populated with non-ASCII data without special
                    # handling to display as a string. We need to handle this
                    # without raising a further exception. We do an
                    # approximation to what the Exception's standard str()
                    # output should be.
                    s = u' '.join([force_unicode(arg, encoding, strings_only,
                                  errors) for arg in s])
        elif not isinstance(s, unicode):
            # Note: We use .decode() here, instead of unicode(s, encoding,
            # errors), so that if s is a SafeString, it ends up being a
            # SafeUnicode at the end.
            s = s.decode(encoding, errors)
    except UnicodeDecodeError, e:
        if not isinstance(s, Exception):
            raise GitModelUnicodeDecodeError(s, *e.args)
        else:
            # If we get to here, the caller has passed in an Exception
            # subclass populated with non-ASCII bytestring data without a
            # working unicode method. Try to handle this without raising a
            # further exception by individually forcing the exception args
            # to unicode.
            s = u' '.join([force_unicode(arg, encoding, strings_only,
                          errors) for arg in s])
    return s
Constructor for this factory
dataset/ETHPy150Open bendavis78/python-gitmodel/gitmodel/utils/encoding.py/force_unicode--crossover with--dataset/ETHPy150Open tuturto/pyherc/src/pyherc/rules/factory.py/SubActionFactory.__init__