我有一个文本文件：
[31/May/2016:11:58:29-0500]/segment?city=london&language=en&x=12345&y=6789&z=1
[31/May/2016:11:59:15-0500]/segment?language=en&city=madrid&x=4589.4583&y=4865.5465&z=3
[31/May/2016:12:05:13-0500]/segment?city=london&language=en&x=12345&y=6789&z=1
[31/May/2016:12:15:13-0500]/segment?city=london&language=en&x=12345&y=6789&z=1
[31/May/2016:12:26:53-0500]/segment?language=en&city=newyork&x=45724.75575&y=424424.77474&z=3
我需要按顺序提取某些值：日期、城市名称、语言、x、y、z。请注意，在某些行中有不同的顺序，并且在未来的文件顺序中也可能会有所不同。
输出应如下所示：
31/May/2016:11:58:29-0500 london en 12345 6789 1
31/May/2016:11:59:15-0500 madrid en 589.4583 4865.5465 3
31/May/2016:12:05:13-0500 london en 12345 6789 1
31/May/2016:12:15:13-0500 london en 12345 6789 1
31/May/2016:12:26:53-0500 newyork en 45724.75575 424424.77474 3
如果可以编辑逗号甚至更好，因为某个 csv 标准输出看起来像这样：
31/May/2016:11:58:29-0500,london,en,12345,6789,1
31/May/2016:11:59:15-0500,madrid,en,589.4583,4865.5465,3
31/May/2016:12:05:13-0500,london,en,12345,6789,1
31/May/2016:12:15:13-0500,london,en,12345,6789,1
31/May/2016:12:26:53-0500,newyork,en,45724.75575,424424.77474,3
这是我的 CSV 文件的示例：
04/Feb/2016:06:38:44-0500,ab,3,10,57,200,10254
04/Feb/2016:06:39:07-0500,cd,1,42,168,304,0
04/Feb/2016:06:39:07-0500,ef,1,43,169,304,0
04/Feb/2016:06:39:07-0500,ab,1,43,170,304,0
04/Feb/2016:06:39:07-0500,cd,1,44,171,304,0
04/Feb/2016:06:39:07-0500,ef,1,45,172,304,0
我想在第二列中获取字符串，如果文件不存在则创建类似该字符串的文件，并在文件中添加该特定行。所以像这样：
fetch string in 2nd column -> "ab" -> if file doesnt exist create file called "ab.csv" -> open file and add line "04/Feb/2016:06:38:44-0500,ab,3,10,57,200,10254"
fetch string in 2nd column -> "cd" -> if file doesnt exist create file called "cd.csv" -> open file and add line "04/Feb/2016:06:39:07-0500,cd,1,42,168,304,0"
fetch string in 2nd column -> "ef" -> if file doesnt exist create file called "ef.csv" -> open file and add line "04/Feb/2016:06:39:07-0500,ef,1,43,169,304,0"
fetch …