Simplify demo code.
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index 42f648a..4a4db29 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -409,7 +409,7 @@
n = len(pool)
r = n if r is None else r
indices = range(n)
- cycles = range(n-r+1, n+1)[::-1]
+ cycles = range(n, n-r, -1)
yield tuple(pool[i] for i in indices[:r])
while n:
for i in reversed(range(r)):
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 3b5cc23..98cceb7 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -141,7 +141,7 @@
n = len(pool)
r = n if r is None else r
indices = range(n)
- cycles = range(n-r+1, n+1)[::-1]
+ cycles = range(n, n-r, -1)
yield tuple(pool[i] for i in indices[:r])
while n:
for i in reversed(range(r)):