code: def _get_size(typ, index):
      if index == 2 and type_check.eval(typ.ndim) == 2:
          return 1
      else:
          return typ.shape[index]
  
imports: import warnings
  import numpy
  from chainer import backend
  from chainer.backends import cuda
  from chainer import function_node
  import chainer.functions
  from chainer import utils
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 8 for calling a global function with example usage: _get_size(typ, index) and returns: int, typ