code: def pytest_addoption(parser):
      parser.addoption(
          "--deviceid",
          action="append",
          default=[_DEFAULT_DEVICE_ID],
          help="list of device ids to pass to test functions",
      )
  
file_path: CNTK/bindings/python/doc/conftest.py
imports: import sys
  import pytest
  import cntk.cntk_py
  import numpy
  import cntk
label_desc: Use image node_id 1 for calling a global function with example usage: pytest_addoption(parser) without return types