Function _parse_iso8601_duration

src/pendulum/parsing/iso8601.py:266–418

(text: str, **options: str)

def _parse_iso8601_duration(text: str, **options: str) -> Duration | None:
    m = ISO8601_DURATION.fullmatch(text)
    if not m or (not m.group("w") and not m.group("ymd") and not m.group("hms")):
        return None

    years = 0
    months = 0
    weeks = 0
    days: int | float = 0
    hours: int | float = 0
    minutes: int | float = 0
    seconds: int | float = 0
    microseconds: int | float = 0
    fractional = False

    _days: str | float
    _hours: str | int | None
    _minutes: str | int | None
    _seconds: str | int | None
    if m.group("w"):
        # Weeks
        if m.group("ymd") or m.group("hms"):
            # Specifying anything more than weeks is not supported
            raise ParserError("Invalid duration string")

        _weeks = m.group("weeks")
        if not _weeks:
            raise ParserError("Invalid duration string")

        _weeks = _weeks.replace(",", ".").replace("W", "")
        if "." in _weeks:
            _weeks, portion = _weeks.split(".")
            weeks = int(_weeks)
            _days = int(portion) / 10 * 7
            days, hours = int(_days // 1), int(_days % 1 * HOURS_PER_DAY)
        else:
            weeks = int(_weeks)

    if m.group("ymd"):
        # Years, months and/or days
        _years = m.group("years")
        _months = m.group("months")
        _days = m.group("days")

        # Checking order
        years_start = m.start("years") if _years else -3
        months_start = m.start("months") if _months else years_start + 1
        days_start = m.start("days") if _days else months_start + 1

        # Check correct order
        if not (years_start < months_start < days_start):
            raise ParserError("Invalid duration")

        if _years:
            _years = _years.replace(",", ".").replace("Y", "")
            if "." in _years:
                raise ParserError("Float years in duration are not supported")
            else: