On Wed, 26 Jan 2011, Xavier Heruacles wrote: > I have do some log processing which is usually huge. The length of each > line is variable. How can I get the last line?? Don't tell me to use > readlines or something like linecache...
file.seek takes an optional 'whence' argument which is 2 for the end, so you can just work back from there till you hit the first newline that has anything after it: def lastline(filename): offset = 0 line = '' with open(filename) as f: while True: offset -= 1 f.seek(offset, 2) nextline = f.next() if nextline == '\n' and line.strip(): return line else: line = nextline John -- http://mail.python.org/mailman/listinfo/python-list