Merge Issue 11662 from 3.2 branch.

1 files changed, 5 insertions, 5 deletions

diff --git a/Lib/random.py b/Lib/random.py
index 7e0de4f6db..3d2af24d43 100644
--- a/Lib/random.py
+++ b/Lib/random.py
@@ -42,7 +42,7 @@ from types import MethodType as _MethodType, BuiltinMethodType as _BuiltinMethod
 from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil
 from math import sqrt as _sqrt, acos as _acos, cos as _cos, sin as _sin
 from os import urandom as _urandom
-import collections as _collections
+from collections.abc import Set as _Set, Sequence as _Sequence
 from hashlib import sha512 as _sha512
 
 __all__ = ["Random","seed","random","uniform","randint","choice","sample",
@@ -114,7 +114,7 @@ class Random(_random.Random):
         if version == 2:
             if isinstance(a, (str, bytes, bytearray)):
                 if isinstance(a, str):
-                    a = a.encode("utf8")
+                    a = a.encode("utf-8")
                 a += _sha512(a).digest()
                 a = int.from_bytes(a, 'big')
 
@@ -293,10 +293,10 @@ class Random(_random.Random):
         # preferred since the list takes less space than the
         # set and it doesn't suffer from frequent reselections.
 
-        if isinstance(population, _collections.Set):
+        if isinstance(population, _Set):
             population = tuple(population)
-        if not isinstance(population, _collections.Sequence):
-            raise TypeError("Population must be a sequence or Set.  For dicts, use list(d).")
+        if not isinstance(population, _Sequence):
+            raise TypeError("Population must be a sequence or set.  For dicts, use list(d).")
         randbelow = self._randbelow
         n = len(population)
         if not 0 <= k <= n: