def open(self):
    'Open a (previously initialized) port on dummy_serial.'
    if VERBOSE:
        _print_out('\nDummy_serial: Opening port\n')
    if self._isOpen:
        raise IOError('Dummy_serial: The port is already open')
    self._isOpen = True
    self.port = self._initial_port_name
Open a (previously initialized) port on dummy_serial.
def open(self):
    
    if VERBOSE:
        _print_out('\nDummy_serial: Opening port\n')
    if self._isOpen:
        raise IOError('Dummy_serial: The port is already open')
    self._isOpen = True
    self.port = self._initial_port_name