class_docstr: Placeholder for Adagrad. This optimizer will not functionally run.
class_docstr_tok: ["Placeholder","for","Adagrad",".","This","optimizer","will","not","functionally","run","."]
code: def step(self, closure=None) -> torch.Tensor:
      raise NotImplementedError
  
imports: from typing import Iterable, Iterator, Tuple
  import torch
  from torch import nn
  from torch.optim.optimizer import Optimizer
label_desc: Use image node_id 2 for calling the Adagrad obj's underlying member method code with example usage: obj.step(closure) without return types