code: def __init__(self, num_feature) -> None:
      super().__init__()
      self.dense = nn.Linear(num_feature, 1)
  
file_path: BigDL/python/ppml/example/pytorch_nn_lr/pytorch_nn_lr_2.py
imports: import logging
  import numpy
  import pandas
  import click
  import torch
  from torch import nn
  from bigdl.ppml.fl.estimator import Estimator
  from bigdl.ppml.fl.nn.fl_context import init_fl_context
  from bigdl.ppml.fl.psi.psi_client import PSI
label_desc: Use image node_id 1 to create a new LocalModel object from inherited base classes: nn with example: obj = LocalModel(num_feature)