[issue44571] itertools: takedowhile()

[Tim Peters]

Tim Peters <tim at python.org> added the comment:

That said, if you really do want those semantics, it's easy to build on top of Raymond's API:

def takewhile_plus_one_more_if_any(pred, iterable):
    from itertools import islice, chain
    before, after = before_and_after(pred, iterable)
    return chain(before, islice(after, 1))

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