Steven D'Aprano wrote:
With a length hint, we could strengthen that promise:
"if __length_hint__ returns a negative number, list, tuple and set will
fail immediately with MemoryError"
which I think is a good safety feature for some things which cannot
possibly succeed, but risk DOSing your system. Does it prevent every
possible failure mode? No, of course not. But just because you can't
prevent *every* problem doesn't mean you should prevent the ones which
you can.
Gah, I messed that last sentence up. It should read:
just because you can't prevent *every* problem doesn't mean you SHOULDN'T
prevent the ones which you can.
--
Steven
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