from datetime import datetime


def parse_iso(timestamp: str) -> datetime:
    """A function to convert the ISO 8601 timestamp to :class:`datetime`.

    Parameters
    ----------
    timestamp: str
        The ISO 8601 timestamp to be converted.

    Returns
    -------
    datetime
        The converted :class:`datetime` timestamp.
    """
    return datetime.strptime(timestamp, '%Y-%m-%dT%H:%M:%S.%f%z')