code: def __str__(self):
      return "[%3d: %7.3f] cpu: %5.1f s, mem: %4d Mb; %s" % self
  
file_path: pysc2/pysc2/bin/mem_leak_check.py
imports: import collections
  import random
  import sys
  import time
  from absl import app
  from absl import flags
  from pysc2 import maps
  from pysc2 import run_configs
  from pysc2.lib import protocol
  from s2clientprotocol import common_pb2
  from s2clientprotocol import sc2api_pb2
label_desc: Use image node_id 1 for calling the Timestep obj's underlying member method code with example usage: obj.__str__() and returns: unknown