Function str_to_datetime

src/python-common/ceph/utils.py:39–84

Convert an ISO 8601 string into a datetime object. The following formats are supported: - 2020-03-03T09:21:43.636153304Z - 2020-03-03T15:52:30.136257504-0600 - 2020-03-03T15:52:30.136257504 :param string: The string to parse. :return: Returns an aware datetime object o

(string: str)

def str_to_datetime(string: str) -> datetime.datetime:
    """
    Convert an ISO 8601 string into a datetime object.
    The following formats are supported:

    - 2020-03-03T09:21:43.636153304Z
    - 2020-03-03T15:52:30.136257504-0600
    - 2020-03-03T15:52:30.136257504

    :param string: The string to parse.
    :return: Returns an aware datetime object of the given date
        and time string.
    :raises: :exc:`~exceptions.ValueError` for an unknown
        datetime string.
    """
    fmts = [
        '%Y-%m-%dT%H:%M:%S.%f',
        '%Y-%m-%dT%H:%M:%S.%f%z',
    ]

    # In *all* cases, the 9 digit second precision is too much for
    # Python's strptime. Shorten it to 6 digits.
    p = re.compile(r'(\.[\d]{6})[\d]*')
    string = p.sub(r'\1', string)

    # Replace trailing Z with -0000, since (on Python 3.6.8) it
    # won't parse.
    if string and string[-1] == 'Z':
        string = string[:-1] + '-0000'

    for fmt in fmts:
        try:
            dt = datetime.datetime.strptime(string, fmt)
            # Make sure the datetime object is aware (timezone is set).
            # If not, then assume the time is in UTC.
            if dt.tzinfo is None:
                dt = dt.replace(tzinfo=datetime.timezone.utc)
            return dt
        except ValueError:
            pass

    raise ValueError(
        "Time data {} does not match one of the formats {}".format(
            string, str(fmts)
        )
    )


def parse_timedelta(delta: str) -> Optional[datetime.timedelta]: