> > On Tue, 17 Nov 2020 at 10:35, Nuri Jung <[email protected]> wrote: > >> > >> How about enabling subscription operator (`[]`) for generator expressions? > >> Also for all `zip()`, `key()`, etc. They could be evaluated in the > >> background only for the requested amount, to avoid evaluating the whole > >> expression to something like a list or tuple, then indexed. > > On Tue, 17 Nov 2020 at 15:37, Joao S. O. Bueno <[email protected]> wrote: > > > > Although that is not a pattern I recall I had needed, but for the first > > item in a generator, > > I recognize it is more complicated than it should to be able to do that. > > On Tue, 17 Nov 2020 at 15:57, Paul Moore <[email protected]> wrote: > > >>> from itertools import islice > >>> a = (i for i in range(0, 100, 10)) > >>> next(islice(a, 5, None))
It would be nice if islice gave an object that supported slicing so that you could spell it like: for x in islice(a)[5:]: I find it hard to decipher the meaning of the arguments to islice compared to reading a normal slice expression. -- Oscar _______________________________________________ Python-ideas mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/UXMQOHBLDHKFHS4D5P5CVR6DPGV5XYAY/ Code of Conduct: http://python.org/psf/codeofconduct/
