code: def GpuNameScope(gpu_id):
      """Create a name scope for GPU device `gpu_id`."""
      with core.NameScope("gpu_{:d}".format(gpu_id)):
          yield
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  from six import string_types
  import contextlib
  from caffe2.proto import caffe2_pb2
  from caffe2.python import core
  from caffe2.python import dyndep
  from caffe2.python import scope
  import detectron.utils.env
label_desc: Use image node_id 8 for calling a global function with example usage: GpuNameScope(gpu_id) without return types