Real Problems with Python
Bjorn Pettersen
bpetterson at uswest.net
Mon Feb 14 12:10:06 EST 2000
But if we get coroutines a la Stackless Python, we could do something like:
def readline(name):
fp = open(name)
while 1:
line = fp.readline()
if not line: break
suspend line
fp.close()
(someone please correct my semantics if I'm wrong -- I really haven't played enough
with suspend yet :-)
of-course-you-can-do-the-same-thing-with-continuations<wink>'ly y'rs
-- bjorn
Martin von Loewis wrote:
> François Pinard <pinard at iro.umontreal.ca> writes:
>
> > I'm not sure of the implications of the above, but one sure thing is that I
> > very much like the current implications of reference counting. When I write:
> >
> > for line in open(FILE).readlines():
> >
> > I rely on the fact FILE will automatically get closed, and very soon since
> > no other references remain. I could of course use another Python line for
> > opening FILE, and yet another for explicitely closing it, as I was doing
> > in my first Python days, but I learned to like terse writings like above,
> > and I do not think there is any loss in legibility in this terseness.
>
> Indeed. I think Tim's right here (as always:); if the request for
> garbage collection is rephrased as 'reclaim cycles', everybody will be
> happy.
>
> Regards,
> Martin
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