code: def _DropoutGrad(op, grad, _):
      dx = gen_nn_ops.dropout_grad(grad, op.inputs[1], op.outputs[1])
      return [dx, None, None, None, None]
  
imports: import functools
  import itertools
  import operator
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import gen_nn_ops
  from tensorflow.python.ops import math_ops
label_desc: Use image node_id 55 for calling a global function with example usage: _DropoutGrad(op, grad, _) and returns: list