From e31f8604e692c46800abd70f88d9928fa1f17b7c Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 30 Jan 2019 13:49:23 -0800
Subject: [PATCH] Document differences between random.choices() and
 random.choice(). (GH-11703) (GH-11706)

---
 Doc/library/random.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Doc/library/random.rst b/Doc/library/random.rst
index 4f251574a327..a543ff016a62 100644
--- a/Doc/library/random.rst
+++ b/Doc/library/random.rst
@@ -162,6 +162,13 @@ Functions for sequences
    with the :class:`float` values returned by :func:`random` (that includes
    integers, floats, and fractions but excludes decimals).
 
+   For a given seed, the :func:`choices` function with equal weighting
+   typically produces a different sequence than repeated calls to
+   :func:`choice`.  The algorithm used by :func:`choices` uses floating
+   point arithmetic for internal consistency and speed.  The algorithm used
+   by :func:`choice` defaults to integer arithmetic with repeated selections
+   to avoid small biases from round-off error.
+
    .. versionadded:: 3.6
 
 
-- 
2.47.3