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| author | Ramil Nugmanov <nougmanoff@protonmail.com> | 2020-05-28 19:46:22 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-28 09:46:22 -0700 |
| commit | cfc6ce4d40f2f01314b7e283fb972a7bb3ed3faa (patch) | |
| tree | 5eb12eb56f6b0dba63a67753bcb1fcc807bfb242 | |
| parent | 242d95659b6b4ff4fb54b58a30454dafa311d4e9 (diff) | |
| download | cpython-git-cfc6ce4d40f2f01314b7e283fb972a7bb3ed3faa.tar.gz | |
bpo-40806: Clarify that itertools.product immediately consumes its inpt (GH-20492)
| -rw-r--r-- | Doc/library/itertools.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index 3e5a673898..3c94c4b35d 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -563,6 +563,9 @@ loops that truncate the stream. for prod in result: yield tuple(prod) + Before :func:`product` runs, it completely consumes the input iterables, + keeping pools of values in memory to generate the products. Accordingly, + it only useful with finite inputs. .. function:: repeat(object[, times]) |