code: def print_critical_paths(critical_paths):
          
          line_indent = " " * 2
          #  print the critical path
          for cp_with_num in enumerate(critical_paths):
              print("Critical path", cp_with_num[0], ":")
              print(line_indent, "The first wire is:", cp_with_num[1][0])
              for net in cp_with_num[1][1]:
                  print(line_indent, (net))
              print()
docs: Prints the results of the critical path length analysis.
              Done by default by the `timing_critical_path()` function.