David Mertz wrote:
Just make grouping() a generator function rather than a plain function. This lets us get an incremental grouping of an iterable. This can be useful if the iterable is slow or infinite, but the partial groupings are useful in themselves.
Do you have any real-world examples? I'm having trouble thinking of any. Even if there are a few, it seems like the vast majority of the time you *won't* want the intermediate groupings, just the final one, and then what do you do? It would be annoying to have to write code to exhaust the iterator just to get the result you're after. Also, were you intending it to return a series of independent objects, or does it just return the same object every time, adding stuff to it? The former would be very inefficient for the majority of uses, whereas the latter doesn't seem to be in keeping with the spirit of itertools. This idea seems like purity beating practicality to me. -- Greg _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
