code: def kernels_output(self, kernel, path, force=False, quiet=True):
          
          if kernel is None:
              raise ValueError('A kernel must be specified')
          if '/' in kernel:
              self.validate_kernel_string(kernel)
              kernel_url_list = kernel.split('/')
              owner_slug = kernel_url_list[0]
              kernel_slug = kernel_url_list[1]
          else:
              owner_slug = self.get_config_value(self.CONFIG_NAME_USER)
              kernel_slug = kernel
  
          if path is None:
              target_dir = self.get_default_download_dir('kernels', owner_slug,
                                                         kernel_slug, 'output')
          else:
              target_dir = path
  
          if not os.path.exists(target_dir):
              os.makedirs(target_dir)
  
          if not os.path.isdir(target_dir):
              raise ValueError(
                  'You must specify a directory for the kernels output')
  
          response = self.process_response(
              self.kernel_output_with_http_info(owner_slug, kernel_slug))
          outfiles = []
          for item in response['files']:
              outfile = os.path.join(target_dir, item['fileName'])
              outfiles.append(outfile)
              download_response = requests.get(item['url'])
              if force or self.download_needed(item, outfile, quiet):
                  os.makedirs(os.path.split(outfile)[0], exist_ok=True)
                  with open(outfile, 'wb') as out:
                      out.write(download_response.content)
                  if not quiet:
                      print('Output file downloaded to %s' % outfile)
  
          log = response['log']
          if log:
              outfile = os.path.join(target_dir, kernel_slug + '.log')
              outfiles.append(outfile)
              with open(outfile, 'w') as out:
                  out.write(log)
              if not quiet:
                  print('Kernel log downloaded to %s ' % outfile)
  
          return outfiles
docs: retrieve output for a specified kernel
               Parameters
              ==========
              kernel: the kernel to output
              path: the path to pull files to on the filesystem
              force: if output already exists, force overwrite (default False)
              quiet: suppress verbosity (default is True)