Sullivan WxPyQtKinter wrote: > I have a huge log file which contains 3,453,299,000 lines with > different lengths. It is not possible to calculate the absolute > position of the beginning of the one billionth line. Are there > efficient way to seek to the beginning of that line in python? > > This program: > for i in range(1000000000): > f.readline() > is absolutely every slow.... > > Thank you so much for help.
That will be slow regardless of language. However n = 10**9 - 1 assert n < sys.maxint f = open(filename) wanted_line = itertools.islice(f, n, None).next() should do slightly better than your implementation. Peter -- http://mail.python.org/mailman/listinfo/python-list
