code: def load_structure_model_and_remove_variable(
      filename: str, var_to_remove: str, default_weight: float = 0.1
  ):
      """
      Utility function to load a structure model and drop a certain node/variable
  
      Args:
          filename: DOT file containing the structure model
          var_to_remove: Variable to remove
          default_weight: Default edge weight
      """
      # Load model
      raw_sm = nx.drawing.nx_pydot.read_dot(filename)
  
      # Convert edge weights from string to float
      sm = nx.DiGraph()
      sm.add_weighted_edges_from(
          [
              (u, v, float(w) if w is not None else default_weight)
              for u, v, w in raw_sm.edges(data="weight")
          ]
      )
      # These are the edges in the latent variable 'G1'.
      # We remove G1's edges and connect each parent to all children
      edges_to_add = [
          edge for edge in sm.edges() if var_to_remove in edge
      ]
      parents = [u for u, v in sm.edges() if v == var_to_remove]
      children = [v for u, v in sm.edges() if u == var_to_remove]
      edges_to_remove = [(p, c) for p in parents for c in children]
  
      # Remove latent variable and connect all parents to all children
      sm.remove_node(var_to_remove)
      sm.add_edges_from(edges_to_remove, weight=default_weight)
  
      return sm, edges_to_add, edges_to_remove
  
imports: import json
  import multiprocessing
  import os
  import warnings
  from collections import defaultdict
  from time import time
  from typing import List, Tuple
  import dataframe_image
  import networkx
  import numpy
  import pandas
  from IPython.core.display import display
  from IPython.display import Image
  from sklearn import metrics
  from sklearn.model_selection import KFold
  from causalnex.evaluation import roc_auc
  from causalnex.inference import InferenceEngine
  from causalnex.network import BayesianNetwork
  from causalnex.plots import plot_structure
  from causalnex.structure import StructureModel
label_desc: Use image node_id 1 for calling a global function with example usage: load_structure_model_and_remove_variable(filename, var_to_remove, default_weight) and returns: sm,  edges_to_add,  edges_to_remove