code: def _pprint_features_dict(features_dict, indent=0, add_prefix=True):
    
    first_last_indent_str = " " * indent
    indent_str = " " * (indent + 4)
    first_line = "%s%s({" % (
        first_last_indent_str if add_prefix else "",
        type(features_dict).__name__,
    )
    lines = [first_line]
    for k in sorted(list(features_dict.keys())):
      v = features_dict[k]
      if isinstance(v, tfds.features.FeaturesDict):
        v_str = _pprint_features_dict(v, indent + 4, False)
      else:
        v_str = str(v)
      lines.append("%s'%s': %s," % (indent_str, k, v_str))
    lines.append("%s})" % first_last_indent_str)
    return "\n".join(lines)
docs: Pretty-print tfds.features.FeaturesDict.