[issue37435] builtin map iterator should provide __length_hint__

[Nicholas Musolino]

Nicholas Musolino <n.musolino at gmail.com> added the comment:

Thanks, Serihy.  I can close this issue.

I actually have been looking at this problem for some time, and created a patch, but don't what the "length transparency issues" that led to #26828 being closed.  

Do you think I should close this and comment on the original issue?

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