code: def init(driverName=None, debug=False):
      '''
      Constructs a new TTS engine instance or reuses the existing instance for
      the driver name.
  
      @param driverName: Name of the platform specific driver to use. If
          None, selects the default driver for the operating system.
      @type: str
      @param debug: Debugging output enabled or not
      @type debug: bool
      @return: Engine instance
      @rtype: L{engine.Engine}
      '''
      try:
          eng = _activeEngines[driverName]
      except KeyError:
          eng = Engine(driverName, debug)
          _activeEngines[driverName] = eng
      return enf init(driverName=None, debug=False):
      '''
      Constructs a new TTS engine instance or reuses the existing instance for
      the driver name.
  
      @param driverName: Name of the platform specific driver to use. If
          None, selects the default driver for the operating system.
      @type: str
      @param debug: Debugging output enabled or not
      @type debug: bool
      @return: Engine instance
      @rtype: L{engine.Engine}
      '''
      try:
          eng = _activeEngines[driverName]
      except KeyError:
          eng = Engine(driverName, debug)
          _activeEngines[driverName] = eng
      return eng
docs: Constructs a new TTS engine instance or reuses the existing instance for
      the driver name.
  
      @param driverName: Name of the platform specific driver to use. If
          None, selects the default driver for the operating system.
      @type: str
      @param debug: Debugging output enabled or not
      @type debug: bool
      @return: Engine instance
      @rtype: L{engine.Engine}