We should add shuffled() analog to sorted. Also shuffle() should return self so mutating methods could be chained. -- Arkadiusz Bulski --
On Tue, Sep 06, 2016 at 02:50:02AM +0200, Arek Bulski wrote:
We should add shuffled() analog to sorted. Also shuffle() should return self so mutating methods could be chained.
from random import shuffle shuffle(mylist) Why is that so important that it needs to be a built-in? In 15+ years of using Python, I've probably used shuffle() three or four times. -- Steve
On Tue, Sep 6, 2016 at 11:03 AM, Steven D'Aprano <steve@pearwood.info> wrote:
What you have isn't quite parallel to shuffled(). It'd need to be more like: mylist = mylist[:] shuffle(mylist) to leave the original list untouched. Might make a nice utility function for someone's personal tool collection, if they're doing this a lot: def shuffled(stuff): lst = list(stuff) random.shuffle(lst) return lst Doesn't need - or want - to be a built-in, partly because shuffling depends on an RNG, which you might want to swap out. At best, it would be a method on the random.Random class... but that's not needed either. ChrisA
On Tue, Sep 06, 2016 at 02:50:02AM +0200, Arek Bulski wrote:
We should add shuffled() analog to sorted. Also shuffle() should return self so mutating methods could be chained.
from random import shuffle shuffle(mylist) Why is that so important that it needs to be a built-in? In 15+ years of using Python, I've probably used shuffle() three or four times. -- Steve
On Tue, Sep 6, 2016 at 11:03 AM, Steven D'Aprano <steve@pearwood.info> wrote:
What you have isn't quite parallel to shuffled(). It'd need to be more like: mylist = mylist[:] shuffle(mylist) to leave the original list untouched. Might make a nice utility function for someone's personal tool collection, if they're doing this a lot: def shuffled(stuff): lst = list(stuff) random.shuffle(lst) return lst Doesn't need - or want - to be a built-in, partly because shuffling depends on an RNG, which you might want to swap out. At best, it would be a method on the random.Random class... but that's not needed either. ChrisA
participants (4)
-
Arek Bulski -
Bernardo Sulzbach -
Chris Angelico -
Steven D'Aprano