docs: def should_not_sample_path(request):
      """Decided whether current request path should be sampled or not. This is
      checked previous to `should_not_sample_route` and takes precedence.
  
      :param: current active pyramid request
      :returns: boolean whether current request path is blacklisted.
      """
      blacklisted_paths = request.registry.settings.get(
          'zipkin.blacklisted_paths', [])
      # Only compile strings, since even recompiling existing
      # compiled regexes takes time.
      regexes = [
          re.compile(r) if isinstance(r, six.string_types) else r
          for r in blacklisted_paths
      ]
      return any(r.match(request.path) for r in regexes)