This is a backport of the updated dis module from Python 3.4 (as described in http://bugs.python.org/issue11816) to earlier versions.
The 3.4 code may not be final yet; this module is a result of applying the dis_api3.diff patch to the trunk code as of rev 308b216f084f (downloaded at 2013-04-10T20:24:27Z).
When 3.4 is released, http://docs.python.org/3/library/dis.html should serve as documentation for this module. Until then, the patched dis34.rst is included here documentation.