def exit_status_ready(self):
return self.closed or self.status_event.isSet()<EOL>
Return true if the remote process has exited and returned an exit
status. You may use this to poll the process status if you don't
want to block in L{recv_exit_status}. Note that the server may not
return an exit status in some cases (like bad servers).

@return: True if L{recv_exit_status} will return immediately
@rtype: bool
@since: 1.7.3