validators.py 文件源码

def datetime(value, default_tzinfo=iso8601.UTC, context=None):
    """validates that a a field is an ISO 8601 string, and converts it to a datetime object."""
    if not value:
        return

    try:
        return iso8601.parse_date(value, default_timezone=default_tzinfo)
    except iso8601.ParseError as e:
        raise ValidationException('Invalid date: %s' % (e))