[issue44571] itertools: takedowhile()

[Raymond Hettinger]

Change by Raymond Hettinger <raymond.hettinger at gmail.com>:


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keywords: +patch
pull_requests: +26596
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28167

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<https://bugs.python.org/issue44571>
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