How to use the zeep.xsd.const.xsd_ns function in zeep

return (
            int(group["year"]),
            int(group["month"]),
            _parse_timezone(group["timezone"]),
        )


class gYear(BuiltinType, AnySimpleType):
    """gYear represents a gregorian calendar year.

    Lexical representation: CCYY

    """

    accepted_types = (datetime.date,) + six.string_types
    _default_qname = xsd_ns("gYear")
    _pattern = re.compile(r"^(?P-?\d{4,})(?PZ|[-+]\d\d:?\d\d)?$")

    @check_no_collection
    def xmlvalue(self, value):
        year, tzinfo = value
        return "%04d%s" % (year, _unparse_timezone(tzinfo))

    def pythonvalue(self, value):
        match = self._pattern.match(value)
        if not match:
            raise ParseError()
        group = match.groupdict()
        return (int(group["year"]), _parse_timezone(group["timezone"]))


class gMonthDay(BuiltinType, AnySimpleType):

class NonNegativeInteger(Integer):
    _default_qname = xsd_ns("nonNegativeInteger")


class UnsignedLong(NonNegativeInteger):
    _default_qname = xsd_ns("unsignedLong")


class UnsignedInt(UnsignedLong):
    _default_qname = xsd_ns("unsignedInt")


class UnsignedShort(UnsignedInt):
    _default_qname = xsd_ns("unsignedShort")


class UnsignedByte(UnsignedShort):
    _default_qname = xsd_ns("unsignedByte")


class PositiveInteger(NonNegativeInteger):
    _default_qname = xsd_ns("positiveInteger")


##
# Other
def _parse_timezone(val):
    """Return a pytz.tzinfo object"""
    if not val:
        return

class Short(Int):
    _default_qname = xsd_ns("short")


class Byte(Short):
    """A signed 8-bit integer"""

    _default_qname = xsd_ns("byte")


class NonNegativeInteger(Integer):
    _default_qname = xsd_ns("nonNegativeInteger")


class UnsignedLong(NonNegativeInteger):
    _default_qname = xsd_ns("unsignedLong")


class UnsignedInt(UnsignedLong):
    _default_qname = xsd_ns("unsignedInt")


class UnsignedShort(UnsignedInt):
    _default_qname = xsd_ns("unsignedShort")


class UnsignedByte(UnsignedShort):
    _default_qname = xsd_ns("unsignedByte")


class PositiveInteger(NonNegativeInteger):
    _default_qname = xsd_ns("positiveInteger")

_default_qname = xsd_ns("nonPositiveInteger")


class NegativeInteger(Integer):
    _default_qname = xsd_ns("negativeInteger")


class Long(Integer):
    _default_qname = xsd_ns("long")

    def pythonvalue(self, value):
        return long(value) if six.PY2 else int(value)  # noqa


class Int(Long):
    _default_qname = xsd_ns("int")


class Short(Int):
    _default_qname = xsd_ns("short")


class Byte(Short):
    """A signed 8-bit integer"""

    _default_qname = xsd_ns("byte")


class NonNegativeInteger(Integer):
    _default_qname = xsd_ns("nonNegativeInteger")

class Notation(BuiltinType, AnySimpleType):
    accepted_types = six.string_types
    _default_qname = xsd_ns("NOTATION")


##
# Derived datatypes


class NormalizedString(String):
    _default_qname = xsd_ns("normalizedString")


class Token(NormalizedString):
    _default_qname = xsd_ns("token")


class Language(Token):
    _default_qname = xsd_ns("language")


class NmToken(Token):
    _default_qname = xsd_ns("NMTOKEN")


class NmTokens(NmToken):
    _default_qname = xsd_ns("NMTOKENS")


class Name(Token):
    _default_qname = xsd_ns("Name")

class Decimal(BuiltinType, AnySimpleType):
    _default_qname = xsd_ns("decimal")
    accepted_types = (_Decimal, float) + six.string_types

    @check_no_collection
    def xmlvalue(self, value):
        return str(value)

    def pythonvalue(self, value):
        return _Decimal(value)


class Float(BuiltinType, AnySimpleType):
    _default_qname = xsd_ns("float")
    accepted_types = (float, _Decimal) + six.string_types

    def xmlvalue(self, value):
        return str(value).upper()

    def pythonvalue(self, value):
        return float(value)


class Double(BuiltinType, AnySimpleType):
    _default_qname = xsd_ns("double")
    accepted_types = (_Decimal, float) + six.string_types

    @check_no_collection
    def xmlvalue(self, value):
        return str(value)

_default_qname = xsd_ns("negativeInteger")


class Long(Integer):
    _default_qname = xsd_ns("long")

    def pythonvalue(self, value):
        return long(value) if six.PY2 else int(value)  # noqa


class Int(Long):
    _default_qname = xsd_ns("int")


class Short(Int):
    _default_qname = xsd_ns("short")


class Byte(Short):
    """A signed 8-bit integer"""

    _default_qname = xsd_ns("byte")


class NonNegativeInteger(Integer):
    _default_qname = xsd_ns("nonNegativeInteger")


class UnsignedLong(NonNegativeInteger):
    _default_qname = xsd_ns("unsignedLong")

    @check_no_collection
    def xmlvalue(self, value):
        month, tzinfo = value
        return "--%d%s" % (month, _unparse_timezone(tzinfo))

    def pythonvalue(self, value):
        match = self._pattern.match(value)
        if not match:
            raise ParseError()
        group = match.groupdict()
        return (int(group["month"]), _parse_timezone(group["timezone"]))


class HexBinary(BuiltinType, AnySimpleType):
    accepted_types = six.string_types
    _default_qname = xsd_ns("hexBinary")

    @check_no_collection
    def xmlvalue(self, value):
        return value

    def pythonvalue(self, value):
        return value


class Base64Binary(BuiltinType, AnySimpleType):
    accepted_types = six.string_types
    _default_qname = xsd_ns("base64Binary")

    @check_no_collection
    def xmlvalue(self, value):
        return base64.b64encode(value)

    @check_no_collection
    def xmlvalue(self, value):
        if isinstance(value, six.string_types):
            return value

        if value.microsecond:
            return isodate.isostrf.strftime(value, "%H:%M:%S.%f%Z")
        return isodate.isostrf.strftime(value, "%H:%M:%S%Z")

    def pythonvalue(self, value):
        return isodate.parse_time(value)


class Date(BuiltinType, AnySimpleType):
    _default_qname = xsd_ns("date")
    accepted_types = (datetime.date,) + six.string_types

    @check_no_collection
    def xmlvalue(self, value):
        if isinstance(value, six.string_types):
            return value
        return isodate.isostrf.strftime(value, "%Y-%m-%d")

    def pythonvalue(self, value):
        return isodate.parse_date(value)


class gYearMonth(BuiltinType, AnySimpleType):
    """gYearMonth represents a specific gregorian month in a specific gregorian
    year.

int(group["month"]),
            int(group["day"]),
            _parse_timezone(group["timezone"]),
        )


class gDay(BuiltinType, AnySimpleType):
    """gDay is a gregorian day that recurs, specifically a day of the month
    such as the 5th of the month

    Lexical representation: ---DD

    """

    accepted_types = (datetime.date,) + six.string_types
    _default_qname = xsd_ns("gDay")
    _pattern = re.compile(r"^---(?P\d\d)(?PZ|[-+]\d\d:?\d\d)?$")

    @check_no_collection
    def xmlvalue(self, value):
        day, tzinfo = value
        return "---%02d%s" % (day, _unparse_timezone(tzinfo))

    def pythonvalue(self, value):
        match = self._pattern.match(value)
        if not match:
            raise ParseError()
        group = match.groupdict()
        return (int(group["day"]), _parse_timezone(group["timezone"]))


class gMonth(BuiltinType, AnySimpleType):