Filtering two files with uncommon column

[Chris]

On Jan 18, 11:23 am, Madhur <madhurr... at gmail.com> wrote:
> I would like to know the best way of generating filter of two files
> based upon the following condition
>
> I have two files. Contents of the first file is
>
> File 1
> abc def hij
> asd sss lmn
> hig pqr mno
>
> File 2
>
> jih def asd
> poi iuu wer
> wer pqr jjj
>
> I would like have the output as
> Output
>
> File1
> asd sss lmn
> File2
> poi iuu wer
>
> Basically I want to compare the two files based on second column. If
> the second
> column matches on both the files do not print anything, else if there
> is no matc
> h in for the second column for first file in second file then print it
> under Fil
> e1 header, else if there is no match for the second column for second
> file in fi
> rst file print it under File2 header.
>
> Thankyou
> Madhur

file1 = open('file1.txt','rb')
file2 = open('file2.txt','rb')

file1_line = file1.next()
file2_line = file2.next()

while file1_line and file2_line:
    try:
        f1_col2 = file1_line.split(' ')[1]
    except IndexError:
        print 'Not enough delimiters in line.'
    try:
        f2_col2 = file2_line.split(' ')[2]
    except IndexError:
        print 'Not enough delimiters in line.'

    if f1_col2 != f2_col2:
        outfile_data_to_relevant_files()

    file1_line = file1.next()
    file2_line = file2.next()

HTH
Chris