code: def _copy_arrays(xs):
      xp = backend.get_array_module(*xs)
      if xp is chainerx:
          return [
              None
              if x is None
              else xp.array(
                  x, dtype=numpy.float64, copy=True, device=x.device
              )
              for x in xs
          ]
      else:
          return [
              xp.array(x, dtype=numpy.float64, copy=True) for x in xs
          ]
  
imports: from __future__ import absolute_import
  import warnings
  import numpy
  import six
  import chainer
  from chainer import backend
  from chainer.backends import _cpu
  from chainer.backends import cuda
  from chainer import configuration
  from chainer import testing
  from chainer import utils
  from chainer import variable
  import chainerx
label_desc: Use image node_id 1 for calling a global function with example usage: _copy_arrays(xs) and returns: unknown, unknown