from datetime import datetime


def parse_date(date_string):
    """Parse a date string with the format '%Y-%m-%dT%H:%M:%S.%fZ'.

    Args:
        date_string (str): string with the format '%Y-%m-%dT%H:%M:%S.%fZ'
    Returns:
        datetime:
    """
    return datetime.strptime(date_string, '%Y-%m-%dT%H:%M:%S.%fZ')