docstr: Single GPU trainer has no cache.
docstr_tok: ["Single","GPU","trainer","has","no","cache","."]
code: def is_finished(self):
      """
      Single GPU trainer has no cache.
      """
      return True
  
imports: from collections import OrderedDict
label_desc: Use image node_id 4 for calling the RunnerSingleGPU obj's underlying member method code with example usage: obj.is_finished() and returns: True