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| -rw-r--r-- | Doc/library/random.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Doc/library/random.rst b/Doc/library/random.rst index 8fbce18..6179826 100644 --- a/Doc/library/random.rst +++ b/Doc/library/random.rst @@ -59,6 +59,12 @@ from sources provided by the operating system. random number generator with a long period and comparatively simple update operations. +.. note:: + The global random number generator and instances of :class:`Random` are thread-safe. + However, in the free-threaded build, concurrent calls to the global generator or + to the same instance of :class:`Random` may encounter contention and poor performance. + Consider using separate instances of :class:`Random` per thread instead. + Bookkeeping functions --------------------- |