feat: support week syntax for isoformat #1
Description
e.g.
date.fromisoformat('2021-W01-1') -> datetime.date(2021, 1, 4)
or 2023-W01-1 represents the first day (Monday) of the first week of the year 2023.
{{ message }}
e.g.
date.fromisoformat('2021-W01-1') -> datetime.date(2021, 1, 4)
or 2023-W01-1 represents the first day (Monday) of the first week of the year 2023.