1 files changed, 18 insertions, 0 deletions
diff --git a/Lib/test/test_itertools.py b/Lib/test/test_itertools.py
index 98cceb7..82e1ee4 100644
--- a/Lib/test/test_itertools.py
+++ b/Lib/test/test_itertools.py
@@ -1285,6 +1285,21 @@ Samuele
 ...         if s:
 ...             yield d
 
+>>> def combinations_with_replacement(iterable, r):
+...     "combinations_with_replacement('ABC', 3) --> AA AB AC BB BC CC"
+...     pool = tuple(iterable)
+...     n = len(pool)
+...     indices = [0] * r
+...     yield tuple(pool[i] for i in indices)
+...     while 1:
+...         for i in reversed(range(r)):
+...             if indices[i] != n - 1:
+...                 break
+...         else:
+...             return
+...         indices[i:] = [indices[i] + 1] * (r - i)
+...         yield tuple(pool[i] for i in indices)
+
 This is not part of the examples but it tests to make sure the definitions
 perform as purported.
 
@@ -1362,6 +1377,9 @@ False
 >>> list(compress('abcdef', [1,0,1,0,1,1]))
 ['a', 'c', 'e', 'f']
 
+>>> list(combinations_with_replacement('abc', 2))
+[('a', 'a'), ('a', 'b'), ('a', 'c'), ('b', 'b'), ('b', 'c'), ('c', 'c')]
+
 """
 
 __test__ = {'libreftest' : libreftest}