code: def list():
      """Print a listing of known running TensorBoard instances.
  
      TensorBoard instances that were killed uncleanly (e.g., with SIGKILL
      or SIGQUIT) may appear in this list even if they are no longer
      running. Conversely, this list may be missing some entries if your
      operating system's temporary directory has been cleared since a
      still-running TensorBoard instance started.
      """
      infos = manager.get_all()
      if not infos:
          print("No known TensorBoard instances running.")
          return
  
      print("Known TensorBoard instances:")
      for info in infos:
          template = "  - port {port}: {data_source} (started {delta} ago; pid {pid})"
          print(
              template.format(
                  port=info.port,
                  data_source=manager.data_source_from_info(info),
                  delta=_time_delta_from_info(info),
                  pid=info.pid,
              )
          )
  
imports: import datetime
  import errno
  import html
  import json
  import os
  import random
  import shlex
  import textwrap
  import time
  from tensorboard import manager
label_desc: Use image node_id 13 for calling a global function with example usage: list() without return types