On Sat, Aug 9, 2014 at 1:08 AM, Steven D'Aprano <st...@pearwood.info> wrote:
> We wouldn't be having > these interminable arguments about using sum() to concatenate strings > (and lists, and tuples) if the & operator was used for concatenation and > + was only used for numeric addition. > But we would probably have a similar discussion about all(). :-) Use of + is consistent with the use of * for repetition. What would you use use for repetition if you use & instead? Compare, for example s + ' ' * (n - len(s)) and s & ' ' * (n - len(s)) Which one is clearer? It is sum() that need to be fixed, not +. Not having sum([a, b]) equivalent to a + b for any a, b pair is hard to justify.
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