code: def tensor(data, dtype=None):
      return copy_to(_tensor(data, dtype), _default_context)
  
file_path: dgl/tests/backend/__init__.py
imports: import importlib
  import os
  import sys
  import numpy
  from dgl.backend import *
  from dgl.nn import *
  from .None import backend_unittest
label_desc: Use image node_id 6 for calling a global function with example usage: tensor(data, dtype) and returns: copy_to