_callmethod(methodname[, args[, kwds]])
Call and return the result of a method of the proxy’s referent.
If proxy is a proxy whose referent is obj then the expression
proxy._callmethod(methodname, args, kwds)
will evaluate the expression
getattr(obj, methodname)(*args, **kwds)
in the manager’s process.
The returned value will be a copy of the result of the call or a proxy to a new shared object – see documentation for the method_to_typeid argument of BaseManager.register().
If an exception