diff -r 2c33c4475e60 Doc/library/subprocess.rst
--- a/Doc/library/subprocess.rst	Thu Aug 09 08:20:20 2012 +0300
+++ b/Doc/library/subprocess.rst	Thu Aug 09 14:03:22 2012 +0300
@@ -208,6 +208,54 @@
    output.
 
 
+.. exception:: SubprocessError
+
+    Base class for all other exceptions from this module.
+
+    .. versionadded:: 3.3
+
+
+.. exception:: TimeoutExpired
+
+    Subclass of :exc:`SubprocessError`, raised when a timeout expires while waiting for a
+    child process.
+
+    .. attribute:: cmd
+
+        Command that was used to spawn the child process.
+
+    .. attribute:: timeout
+
+        Timeout in seconds.
+
+    .. attribute:: output
+
+        Output of the child process if this exception is raised by :func:`check_output`.
+        Otherwise, None.
+
+    .. versionadded:: 3.3
+
+
+.. exception:: CalledProcessError
+
+    Subclass of :exc:`SubprocessError`, raised when a process run by check_call() or
+    check_output() returns a non-zero exit status.
+
+    .. attribute:: returncode
+
+        Exit status of the child process.
+
+    .. attribute:: cmd
+
+        Command that was used to spawn the child process.
+
+    .. attribute:: output
+
+        Output of the child process if this exception is raised by :func:`check_output`.
+        Otherwise, None.
+
+
+
 .. _frequently-used-arguments:
 
 Frequently Used Arguments