class_docstr: Base class of models that need training.
code: def fit(self, input: Any) -> None:
      pass
  
imports: from abc import ABC, abstractmethod
  from copy import deepcopy
  from typing import Any, Dict, List, Tuple, Union
  import pandas
label_desc: Use image node_id 4 for calling the _TrainableModel obj's underlying member method code with example usage: obj.fit(input) without return types