code: def set_position(
      parent, tree, remaining_nodes, delta_x, y_coordinate, pos
  ):
      """Helper method to calculate the absolute position of nodes."""
      child = tree[parent]
      parent_node_x = pos[parent][0]
      if child is not None:
          # Calculate pos of child
          child_x = parent_node_x + delta_x[child]
          pos[child] = (child_x, y_coordinate[child])
          # Remember to calculate pos of its children
          remaining_nodes.append(child)
  
file_path: networkx/networkx/algorithms/planar_drawing.py
imports: from collections import defaultdict
  import networkx
label_desc: Use image node_id 2 for calling a global function with example usage: set_position(parent, tree, remaining_nodes, delta_x, y_coordinate, pos) without return types