On Jan 30, 8:38 am, "Alf P. Steinbach" wrote:
> It does.
>
> 'extend' is an operation that /modifies/ the array.
>
> It just returns None as its expression result, in the same way as e.g. the
> Python 3.x 'print' (another pure "doer" operation).
>
> >>> L = ['a']
> >>> L
> ['a']
> >>>
Why does extending a list with the empty list result in None? It
seems very counterintuitive to me, at least --- I expected ['a'].extend
([]) to result in ['a'], not None.
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