diff -r eb0af7f6ea6d Doc/library/subprocess.rst
--- a/Doc/library/subprocess.rst	Mon Jul 30 04:09:32 2012 -0700
+++ b/Doc/library/subprocess.rst	Mon Jul 30 16:19:52 2012 +0300
@@ -176,6 +176,14 @@
    output.
 
 
+.. exception:: CalledProcessError
+
+    Exception raised when a process run by check_call() or
+    check_output() returns a non-zero exit status.
+    The exit status will be stored in the returncode attribute;
+    check_output() will also store the output in the output attribute.
+
+
 .. _frequently-used-arguments:
 
 Frequently Used Arguments