code: def __str__(self):
      # env, path, run_opts
      cmd_list = []
      cmd_list += self.envs
      cmd_list += [self.path]
      cmd_list += self.opts
      print(cmd_list)
      return " ".join(cmd_list)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
label_desc: Use image node_id 2 for calling the Target obj's underlying member method code with example usage: obj.__str__() and returns: str