Function _parse_iso8601_interval

src/pendulum/parsing/__init__.py:210–236

(text: str)

def _parse_iso8601_interval(text: str) -> _Interval:
    if "/" not in text:
        raise ParserError("Invalid interval")

    first, last = text.split("/")

    if not first or not last:
        raise ParserError("Invalid interval.")

    start = end = duration = None

    if first[:1] == "P":
        # duration/end
        duration = parse_iso8601(first)
        end = parse_iso8601(last)
    elif last[:1] == "P":
        # start/duration
        start = parse_iso8601(first)
        duration = parse_iso8601(last)
    else:
        # start/end
        start = parse_iso8601(first)
        end = parse_iso8601(last)

    return _Interval(
        cast("datetime", start), cast("datetime", end), cast("Duration", duration)
    )


__all__ = ["parse", "parse_iso8601"]