code: def count_weights_from_readable_model_file_for_equiv_test(file_name):
      with open(file_name) as file:
          model_file_contents = file.read()
          DELIM = "action_sum 5\n:0\n"
          weights_idx = model_file_contents.find(DELIM) + len(DELIM)
          return model_file_contents[weights_idx:].count("\n")
  
imports: import vowpalwabbit
label_desc: Use image node_id 1 for calling a global function with example usage: count_weights_from_readable_model_file_for_equiv_test(file_name) and returns: model_file_contents