list.reverse()

[Erik Max Francis]

Mike Dean wrote:

> I think I recall seeing a reasonable explanation for this earlier
> (probably referring actually to list.sort()), but I'm wondering - what
> was the rationale for making list.reverse() reverse a list in-place
> rather than return a new, reversed list?  I'm sure there's a good
> reason, but what might that be?

Optimization.  If you want a copy of a reversed list, make a copy of
your list and then reverse that:

	l2 = l[:]
	l2.reverse()

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