code: def start_pipeline(url, pipeline_id, auth, verify_ssl, runtime_parameters={}):
      
      start_result = requests.post(url + '/' + pipeline_id + '/start',
                                   headers=X_REQ_BY, auth=auth, verify=verify_ssl, json=runtime_parameters)
      start_result.raise_for_status()
      logging.info('Pipeline start requested.')
  
      poll_pipeline_status(STATUS_RUNNING, url, pipeline_id, auth, verify_ssl)
  
      logging.info("Pipeline started.")
      return start_result.json()
docs: Start a running pipeline. The API waits for the pipeline to be fully started.
  
      Args:
          url                 (str): the host url in the form 'http://host:port/'.
          pipeline_id         (str): the ID of of the exported pipeline.
          auth              (tuple): a tuple of username, and password.
          runtime_parameters (dict): the desired runtime parameters for the pipeline.
          verify_ssl         (bool): whether to verify ssl certificates
  
      Returns:
          dict: the response json