The order of iterable de-referencing in assignment?
Random832
random832 at fastmail.com
Wed Aug 24 10:10:14 EDT 2016
On Wed, Aug 24, 2016, at 07:17, Chris Angelico wrote:
> Objects/listobject.c:795
>
> /* Special cases:
> 1) lists and tuples which can use PySequence_Fast ops
> 2) extending self to self requires making a copy first
> */
And, of course, it is a special case - a.extend(iter(a)) is enough to
break it.
Frankly I'm not sure why bother to implement it when anyone who
legitimately wants to do it can simply do a *= 2.
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