class_docstr: sys conf
class_docstr_tok: ["sys","conf"]
code: def __init__(self, device_id: int = -1):
      self._device_id = device_id
  
file_path: towhee/towhee/runtime/runtime_conf.py
imports: import contextvars
  import contextlib
  import functools
label_desc: Use image node_id 1 to create a new SysConf object  with example: obj = SysConf(device_id)