code: def attach_run_command(cmd):
      
      if isinstance(cmd, tuple):
          return _lxc.attach_run_command(cmd)
      elif isinstance(cmd, list):
          return _lxc.attach_run_command((cmd[0], cmd))
      else:
          return _lxc.attach_run_command((cmd, [cmd]))
docs: Run a command when attaching
  
          Please do not call directly, this will execvp the command.
          This is to be used in conjunction with the attach method
          of a container.