class_docstr: Straight through the gradient to the score, then the score = initial_score + sum(-lr * grad(weight) * weight).
class_docstr_tok: ["Straight","through","the","gradient","to","the","score",",","then","the","score","=","initial_score","+","sum","(","-lr","*","grad","(","weight",")","*","weight",")","."]
code: def backward(ctx, gradOutput):
      return gradOutput, None
  
imports: from typing import Any
  import torch
  from .target_space import PruningTargetSpace, QuantizationTargetSpace, TargetSpace, TargetType
label_desc: Use image node_id 2 for calling the _StraightThrough obj's underlying member method code with example usage: obj.backward(ctx, gradOutput) and returns: gradOutput,  None