Terry J. Reedy <tjre...@udel.edu> added the comment: Raymond, I pretty much agree with your points and would be happy either with rejection or one simple sentence. This idiom really belongs in a hypothetical how-to, such as 'Python iterators and generators'. The real use case for it=iter() followed by next(it) it to treat the first item of a collection specially before scanning the rest in a for loop.
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