Function _unpack_netcdf_time_units

xarray/coding/times.py:205–217

(units: str)

def _unpack_netcdf_time_units(units: str) -> tuple[str, str]:
    # CF datetime units follow the format: "UNIT since DATE"
    # this parses out the unit and date allowing for extraneous
    # whitespace. It also ensures that the year is padded with zeros
    # so it will be correctly understood by pandas (via dateutil).
    matches = re.match(r"(.+) since (.+)", units)
    if not matches:
        raise ValueError(f"invalid time units: {units}")

    delta_units, ref_date = (s.strip() for s in matches.groups())
    ref_date = _ensure_padded_year(ref_date)

    return delta_units, ref_date


def named(name: str, pattern: str) -> str: