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author | Charles Harris <charlesr.harris@gmail.com> | 2023-05-13 11:02:49 -0600 |
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committer | GitHub <noreply@github.com> | 2023-05-13 11:02:49 -0600 |
commit | 5187067d7ad176ee3614beab2b99a524dd719aa8 (patch) | |
tree | 907997d0c294f550193322aaa73237c1a7bcfaa6 /doc/release/upcoming_changes/23195.improvement.rst | |
parent | b786189222ac5bf2f4efbb04399261f7f760bc18 (diff) | |
parent | 81caed6e3c34c4bf4b22b4f6167e816ba2a3f73c (diff) | |
download | numpy-5187067d7ad176ee3614beab2b99a524dd719aa8.tar.gz |
Merge branch 'main' into deprecate-find-common-type
Diffstat (limited to 'doc/release/upcoming_changes/23195.improvement.rst')
-rw-r--r-- | doc/release/upcoming_changes/23195.improvement.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/release/upcoming_changes/23195.improvement.rst b/doc/release/upcoming_changes/23195.improvement.rst new file mode 100644 index 000000000..38b33e849 --- /dev/null +++ b/doc/release/upcoming_changes/23195.improvement.rst @@ -0,0 +1,20 @@ +Ability to directly spawn random number generators +-------------------------------------------------- +`numpy.random.Generator.spawn` now allows to directly spawn new +independent child generators via the `numpy.random.SeedSequence.spawn` +mechanism. +`numpy.random.BitGenerator.spawn` does the same for the underlying +bit generator. + +Additionally, `numpy.random.BitGenerator.seed_seq` now gives direct +access to the seed sequence used for initializing the bit generator. +This allows for example:: + + seed = 0x2e09b90939db40c400f8f22dae617151 + rng = np.random.default_rng(seed) + child_rng1, child_rng2 = rng.spawn(2) + + # safely use rng, child_rng1, and child_rng2 + +Previously, this was hard to do without passing the ``SeedSequence`` +explicitly. Please see `numpy.random.SeedSequence` for more information. |