Dear friends, I want to extract certain 6 different columns from a many files and write it to 6 separate output files. I took some help from the following link
http://mail.python.org/pipermail/tutor/2004-November/033475.html to write one column from many input files to a particular output file. Since i have to extract 6 such columns, i wanted to loop the output file writing part. This block of the script is shown in bold below. I see some odd output file names. Kindly suggest me i ) how best or should i do this loop part ii) explanation of the working *row=map(None,*value) *below which i adopted from the above tutor-mail list link. Thanks in advance, Bala #!/usr/bin/env python from sys import argv lst_files=argv[1:] sh=[];st=[];sta=[];buc=[];pro=[];ope=[] def extract(fname)*:* A=[];B=[];C=[];D=[];E=[];F=[] data=open(fname).readlines() for number, line in enumerate(data): if " Duplex" and " Shear" in line: number=number+3 for x in range(0,8): new=data[number] A.append(new[19:26]) B.append(new[27:34]) C.append(new[37:42]) D.append(new[44:54]) E.append(new[56:63]) F.append(new[69:75]) number = number + 1 sh.append(A) st.append(B) sta.append(C) buc.append(D) pro.append(E) ope.append(F) for x in lst_files: extract(x) *list=[sh,st,sta,buc,pro,ope]* *for value in list:* *row=map(None,*value)* *out=open(str(value) + '.txt','w') for num in row: out.write('\t'.join(num)) out.write('\n') out.close()*
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