On Thu, Jul 14, 2011 at 1:46 PM, Billy Mays <no...@nohow.com> wrote:
> def getLines(f):
> lines = []
> for line in f:
> lines.append(line)
> return lines
>
> with open('/var/log/syslog', 'rb') as f:
> lines = getLines(f)
> # do some processing with lines
> # /var/log/syslog gets updated in the mean time
>
> # always returns an empty list, even though f has more data
> lines = getLines(f)
>
>
>
>
> I found a workaround by adding f.seek(0,1) directly before the last
> getLines() call, but is this the expected behavior? Calling f.tell() right
> after the first getLines() call shows that it isn't reset back to 0. Is
> this correct or a bug?
This is expected. Part of the iterator protocol is that once an
iterator raises StopIteration, it should continue to raise
StopIteration on subsequent next() calls.
--
http://mail.python.org/mailman/listinfo/python-list
