code: def _as_tuple(xs):
      if isinstance(xs, tuple):
          return xs
      elif isinstance(xs, list):
          return tuple(xs)
      else:
          return (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 7 for calling a global function with example usage: _as_tuple(xs) and returns: xs, tuple, xs