code: def find_free_port(self):
      with closing(
          socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      ) as s:
          s.bind(("", 0))
          s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
          return s.getsockname()[1]
  
imports: from imports import *
  from plotly_graphs import *
  from protodash import *
  from insights import *
  from plotly_css import *
  import pandasql
  import string
  import random
  import os
  from apps import global_explanation, local_explanation, distribution, feature_interaction, cohort
  from app import app
  from what_if import *
  from calculate_shap import *
  from analytics import Analytics
  from cohort_analysis import *
label_desc: Use image node_id 12 for calling the dashboard obj's underlying member method code with example usage: obj.find_free_port() and returns: s