#5491: clarify nested() semantics.
diff --git a/Doc/library/contextlib.rst b/Doc/library/contextlib.rst
index 8c10c95..935afee 100644
--- a/Doc/library/contextlib.rst
+++ b/Doc/library/contextlib.rst
@@ -63,14 +63,15 @@
from contextlib import nested
- with nested(A, B, C) as (X, Y, Z):
+ with nested(A(), B(), C()) as (X, Y, Z):
do_something()
is equivalent to this::
- with A as X:
- with B as Y:
- with C as Z:
+ m1, m2, m3 = A(), B(), C()
+ with m1 as X:
+ with m2 as Y:
+ with m3 as Z:
do_something()
Note that if the :meth:`__exit__` method of one of the nested context managers