[Python-ideas] Make len() usable on a generator

[Alexander Belopolsky]

On Fri, Oct 3, 2014 at 11:48 AM, Cathal Garvey <cathalgarvey at cathalgarvey.me
> wrote:

> Some builtin generators appear to do just this:
>
> In [10]: %timeit  len(range(100))
>

Builtin range is not a generator.
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