code: def map_template(category, template_list):
      
  
      if isinstance(template_list, str):
          template_list = [template_list]
  
      for template in template_list:
          path = os.path.normpath(category)
          while path is not None:
              for extension in ['', '.html', '.htm', '.xml', '.json']:
                  candidate = os.path.join(path, template + extension)
                  file_path = os.path.join(config.template_folder, candidate)
                  if os.path.isfile(file_path):
                      return Template(template, candidate, file_path)
              parent = os.path.dirname(path)
              if parent != path:
                  path = parent
              else:
                  path = None
docs: Given a file path and an acceptable list of templates, return the
      best-matching template's path relative to the configured template
      directory.
  
      Arguments:
  
      category -- The path to map
      template_list -- A template to look up (as a string), or a list of templates.