On Thu, 10 Feb 2005 05:38:54 +0000, Ray Gibbon wrote:
> e.g. 2
> | while new_data, environment = get_more_data(source):
> | process_data(new_data, environment)
>
> is something I'm equally likely to want to do, but I can't express it's
> meaning.
I think we'd usually phrase that as
for new_data, environment in data(source):
process_data(new_data, environment)
and if data(source) isn't already an iterator of one form or another (a
list, a generator, etc.), you can easily write it to be one; most of the
time it already is.
I use while, but much, much more rarely than for, even for things I'd
write as "while" in other languages, and the majority of the "while"s are
infinite generators, e.g.:
def counter():
i = 0
while True:
yield i
i += 1
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