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bpo-40806: itertools.product docs clarify #20492

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rhettinger merged 4 commits into from
May 28, 2020
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bpo-40806: itertools.product docs clarify #20492

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stsouko May 28, 2020
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moved to newline.
stsouko May 28, 2020
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reformatted due to autotesting failed
stsouko May 28, 2020
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* Fix bad markup which was being rejected by the buildbots.
rhettinger May 28, 2020
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stsouko committed May 28, 2020
commit 539692c7fae20f95840786477ca59df68c84789f
3 changes: 3 additions & 0 deletions Doc/library/itertools.rst
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Expand Up @@ -563,6 +563,9 @@ loops that truncate the stream.
for prod in result:
yield tuple(prod)

Note, ``product`` expect its arguments to be finite iterables.
It keep all their elements in memory to produce all possible pairs.
For this reason ``product`` may require significant auxiliary storage (depending on lengths of iterables).

.. function:: repeat(object[, times])

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