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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Sat, 15 Feb 2014 00:27:02 -0700
Subject: Re: Generator using item[n-1] + item[n] memory
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On Fri, Feb 14, 2014 at 8:31 PM, Nick Timkovich <prometheus235@gmail.com> wrote:
> OK, now the trick; adding `data = None` inside the generator works, but in
> my actual code I wrap my generator inside of `enumerate()`, which seems to
> obviate the "fix".  Can I get it to play nice or am I forced to count
> manually. Is that a feature?

Yeah, looks like enumerate also doesn't release its reference to the
previous object until after it gets the next one.  You'll just have to
make do without.