On Feb 13, 4:03 pm, Horacius ReX <[EMAIL PROTECTED]> wrote: > Hi, > > I have a file with a lot of the following ocurrences: > > denmark.handa.1-10 > denmark.handa.1-12344 > denmark.handa.1-4 > denmark.handa.1-56 > > ... > > distributed randomly in a file. I need to convert each of this > ocurrences to: > > denmark.handa.1-10_1 > denmark.handa.1-12344_1 > denmark.handa.1-4_1 > denmark.handa.1-56_1 >
Is each one of those a line in the file? Or are those words distributed throughout the file? If each one is a line, try this: import os input = open('data.txt') output = open('temp.txt', 'w') for line in input: if line.startswith('denmark.handa.'): output.write('%s_1\n' % line.strip()) else: output.write(line) os.remove('data.txt') os.rename('temp.txt', 'data.txt') -- http://mail.python.org/mailman/listinfo/python-list