List comprehension operators
It would be awesome to be able to create a list with just: li = [1—100] or li = [1 .. 100]
list(range(1, 101)) I think we don't need a whole new syntax for something that's already an easy one-liner. -- Finn (Mobile) On Tue, Dec 14, 2021, 8:52 AM a.kolpakov2010--- via Python-ideas < python-ideas@python.org> wrote:
It would be awesome to be able to create a list with just:
li = [1—100]
or
li = [1 .. 100] _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-leave@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/CQOPU4... Code of Conduct: http://python.org/psf/codeofconduct/
On Tue, Dec 14, 2021 at 03:46:06PM -0000, a.kolpakov2010--- via Python-ideas wrote:
It would be awesome to be able to create a list with just:
li = [1—100]
[1-100] already has a meaning in Python: it computes 1-100 = -99 and puts it in a list.
or
li = [1 .. 100]
Is that an open, closed, or half-open interval? -- Steve
If you didn't know, range objects already support most non-mutating list methods: >>> fakelist = range(1, 101) >>> fakelist[-1] 100 >>> fakelist[-10:] range(91, 101) >>> 50 in fakelist True >>> fakelist.index(50) 49 Range objects are more efficient than lists since they use O(1) memory instead of O(n), and many of the methods take O(1) time instead of O(n).
participants (5)
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a.kolpakov2010＠mail.ru -
Ben Rudiak-Gould -
Finn Mason -
Simão Afonso -
Steven D'Aprano