https://github.com/python/cpython/commit/c83efa7a66e30276c328fa4a5f8f8d26977f3e1c
commit: c83efa7a66e30276c328fa4a5f8f8d26977f3e1c
branch: main
author: dgpb <3577712+dg...@users.noreply.github.com>
committer: rhettinger <rhettin...@users.noreply.github.com>
date: 2025-03-20T17:07:28-05:00
summary:
gh-131435: random.randint optimization (gh-131436)
files:
A Misc/NEWS.d/next/Library/2025-03-19-20-37-07.gh-issue-131435.y8KMae.rst
M Lib/random.py
diff --git a/Lib/random.py b/Lib/random.py
index 4d9a047b027974..d6f5337d40f6ba 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -336,8 +336,11 @@ def randrange(self, start, stop=None, step=_ONE):
def randint(self, a, b):
"""Return random integer in range [a, b], including both end points.
"""
-
- return self.randrange(a, b+1)
+ a = _index(a)
+ b = _index(b)
+ if b < a:
+ raise ValueError(f"empty range in randint({a}, {b})")
+ return a + self._randbelow(b - a + 1)
## -------------------- sequence methods -------------------
diff --git
a/Misc/NEWS.d/next/Library/2025-03-19-20-37-07.gh-issue-131435.y8KMae.rst
b/Misc/NEWS.d/next/Library/2025-03-19-20-37-07.gh-issue-131435.y8KMae.rst
new file mode 100644
index 00000000000000..1a9810a8fed7d5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-03-19-20-37-07.gh-issue-131435.y8KMae.rst
@@ -0,0 +1 @@
+10-20% performance improvement of :func:`random.randint`.
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