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| author | HongWeipeng <961365124@qq.com> | 2019-08-29 03:39:25 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2019-08-29 03:39:25 (GMT) |
| commit | fa220ec7633e9674baccc28dde987f29d7f65141 (patch) | |
| tree | 065b6b1b6cadd563ba6e357217318404b6cedc43 /Doc/library | |
| parent | 13f37f2ba8b1fa39f312dca920e847d9c0313c77 (diff) | |
| download | cpython-fa220ec7633e9674baccc28dde987f29d7f65141.zip cpython-fa220ec7633e9674baccc28dde987f29d7f65141.tar.gz cpython-fa220ec7633e9674baccc28dde987f29d7f65141.tar.bz2 | |
Raise a RuntimeError when tee iterator is consumed from different threads (GH-15567)
Diffstat (limited to 'Doc/library')
| -rw-r--r-- | Doc/library/itertools.rst | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index a3f403a..8e7899e 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -643,7 +643,8 @@ loops that truncate the stream. Once :func:`tee` has made a split, the original *iterable* should not be used anywhere else; otherwise, the *iterable* could get advanced without - the tee objects being informed. + the tee objects being informed. the :func:`tee` iterator can not be consumed + from different threads, even if an underlying iterator is thread-safe. This itertool may require significant auxiliary storage (depending on how much temporary data needs to be stored). In general, if one iterator uses |