The 'Using a remote manager' section of the multiprocessing docs has an
example of calling the (documented) 'from_address' class method of
BaseManager.  However, no such method appears to exist. I don't know if
this is a doc bug or a code bug. The __reduce__ method of BaseManager
calls type(self).from_address, and that and a similar pickle-related
call in sharedctypes are the only places it is mentioned in the module.
 It is not mentioned in the test suite.

In any case, the example does not work as written, and there appear to
be multiple errors in the "another client" (the read client) example.  I
haven't played with the "local client" example at all.