__init__
- DevManager.__init__(devices: Union[List[int], int], backend_name='')
Initializes a DevManager instance.
- Parameters:
devices -- Device ID or a list of device IDs. Can be a single device ID (int) or a list of device IDs (List[int]).
backend_name -- The backend name, default is an empty string.
- Raises:
RuntimeError -- If the device manager fails to initialize, a runtime error is raised.