New submission from Robert Smart <robert.kenneth.sm...@gmail.com>:

When a generator procedure ends with "yield from" it would be nice if this was 
handled efficiently (just replace the generator with the new source). Because 
it is natural to push things back into a generator with

def prependGen(hd,tl):
    yield hd
    yield from tl

----------
messages: 309407
nosy: Robert Smart
priority: normal
severity: normal
status: open
title: tail optimization for 'yield from'
type: resource usage
versions: Python 3.6

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32486>
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