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| author | Andrew M. Kuchling <amk@amk.ca> | 2010-04-02 17:48:23 (GMT) |
|---|---|---|
| committer | Andrew M. Kuchling <amk@amk.ca> | 2010-04-02 17:48:23 (GMT) |
| commit | d8862904641efabcded42a8db16f255f171e59e7 (patch) | |
| tree | b2e1f8962e88447aaa2b13da8c92b1e1c658fdcb /Doc | |
| parent | f37592fda1f3ab3e23d7e3e72faa57f599b9dc9f (diff) | |
| download | cpython-d8862904641efabcded42a8db16f255f171e59e7.zip cpython-d8862904641efabcded42a8db16f255f171e59e7.tar.gz cpython-d8862904641efabcded42a8db16f255f171e59e7.tar.bz2 | |
#6647: document that catch_warnings is not thread-safe
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/warnings.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/library/warnings.rst b/Doc/library/warnings.rst index e4343e8..91ab085 100644 --- a/Doc/library/warnings.rst +++ b/Doc/library/warnings.rst @@ -383,6 +383,14 @@ Available Context Managers .. note:: + The :class:`catch_warnings` manager works by replacing and + then later restoring the module's + :func:`showwarning` function and internal list of filter + specifications. This means the context manager is modifying + global state and therefore is not thread-safe. + + .. note:: + In Python 3.0, the arguments to the constructor for :class:`catch_warnings` are keyword-only arguments. |