data = pd.read_csv(
    'Log_jeden_den.log',
 sep=r'\s+(?=(?:[^"]*"[^"]*")*[^"]*$)(?=(?:[^\[]*\[[^\]]*\])*[^\]]*$)',
    engine='python',
    na_values='-',
    header=None,
    usecols=[0, 3, 4, 5, 6, 7, 8],
    names=['ip', 'time', 'request', 'status', 'size', 'referer', 'user_agent'],
    converters={'time': parse_datetime,
                'request': parse_str,
                'status': parse_int,
                'size': parse_int,
                'referer': parse_str,
                'user_agent': parse_str})