Issue #16394: Note the tee() pure python equivalent is only a rough approximation.
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@ -588,7 +588,10 @@ loops that truncate the stream.
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.. function:: tee(iterable, n=2)
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Return *n* independent iterators from a single iterable. Equivalent to::
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Return *n* independent iterators from a single iterable.
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The following Python code helps explain what *tee* does (although the actual
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implementation is more complex and uses only a single underlying FIFO queue)::
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def tee(iterable, n=2):
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it = iter(iterable)
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