method: _thread.WorkerPool.dispatch

 return Reply object for the asynchronous dispatch 
            of the given func(*args, **kwargs) in a 
            separate worker thread.

    def dispatch(self, func, *args, **kwargs):

origin: _thread.WorkerPool

where:

self :: <Instance of Class WorkerPool>
func :: AnyOf(<Method>, <Function>)
return value :: AnyOf(<None>, <Instance of Class Reply>)

exceptions that might appear during execution:

IOError
KeyError

function source:

def dispatch(self, func, *args, **kwargs): 
    """ return Reply object for the asynchronous dispatch 
            of the given func(*args, **kwargs) in a 
            separate worker thread. 
        """
    if self._shuttingdown: 
        raise IOError("WorkerPool is already shutting down") 
    try: 
        thread, _ = self._ready.popitem() 
    except KeyError: # pop from empty list
        if self.maxthreads and len(self._alive) >= self.maxthreads: 
            raise IOError("can't create more than %d threads." %
                          (self.maxthreads,))
        thread = self._newthread() 
    return thread.send((func, args, kwargs))