How to use the aniso8601.parse_interval function in aniso8601

def _parse_interval(value):
    """Do some nasty try/except voodoo to get some sort of datetime
    object(s) out of the string.
    """
    try:
        return sorted(aniso8601.parse_interval(value))
    except ValueError:
        try:
            return aniso8601.parse_datetime(value), None
        except ValueError:
            return aniso8601.parse_date(value), None

def _parse_interval(value):
    """Do some nasty try/except voodoo to get some sort of datetime
    object(s) out of the string.
    """
    try:
        return sorted(aniso8601.parse_interval(value))
    except ValueError:
        try:
            return aniso8601.parse_datetime(value), None
        except ValueError:
            return aniso8601.parse_date(value), None

def parse_iso8601_interval(value):
    try:
        return aniso8601.parse_interval(value)
    except Exception:
        try:
            return aniso8601.parse_repeating_interval(value)
        except Exception:
            raise FormatError('{} is not an iso8601 interval'.format(value))

def __init__(self, v):
        import aniso8601

        self.interval = aniso8601.parse_interval(v)

def _parse_interval(value):
    """Do some nasty try/except voodoo to get some sort of datetime
    object(s) out of the string.
    """
    try:
        return sorted(aniso8601.parse_interval(value))
    except ValueError:
        try:
            return aniso8601.parse_datetime(value), None
        except ValueError:
            return aniso8601.parse_date(value), None