Fix sentence fragment
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index dafa6d8..68a4ffd 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -410,8 +410,8 @@
repetitions with the optional *repeat* keyword argument. For example,
``product(A, repeat=4)`` means the same as ``product(A, A, A, A)``.
- Equivalent to the following except that the actual implementation does not
- build-up intermediate results in memory::
+ This function is equivalent to the following code, except that the
+ actual implementation does not build up intermediate results in memory::
def product(*args, **kwds):
pools = map(tuple, args) * kwds.get('repeat', 1)