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c = 0f = open("c:/conv.kss", "r")rawlines = f.readlines()f.closeoutput = open("c:/mytest2.kss", 'w')for line in rawlines:    if c > 1:        myvar = line.split(',')        if len(myvar) > 5:            print myvar[3]            print myvar[4]            output.write(line.replace(myvar[4], myvar[3]))        else:            output.write(line)    else:        output.write(line)    c = c + 1output.close