code: def runCommand(command):
      
      output = None
      try:
          output = subprocess.check_output(
              command,
              stderr=subprocess.STDOUT,
              shell=False,
          )
      except subprocess.CalledProcessError:
          msg = "couldn't run command\n" + " ".join(command)
          raise ProgramError(msg)
docs: Run a command.
  
      :param command: the command to run.
  
      :type command: list
  
      Tries to run a command. If it fails, raise a :py:class:`ProgramError`. This
      function uses the :py:mod:`subprocess` module.
  
      .. warning::
          The variable ``command`` should be a list of strings (no other type).