Function re_unescape

python/python3/tornado/util.py:209–218

r"""Unescape a string escaped by `re.escape`. May raise ``ValueError`` for regular expressions which could not have been produced by `re.escape` (for example, strings containing ``\d`` cannot be unescaped). .. versionadded:: 4.4

(s: str)

def re_unescape(s: str) -> str:
    r"""Unescape a string escaped by `re.escape`.

    May raise ``ValueError`` for regular expressions which could not
    have been produced by `re.escape` (for example, strings containing
    ``\d`` cannot be unescaped).

    .. versionadded:: 4.4
    """
    return _re_unescape_pattern.sub(_re_unescape_replacement, s)


class Configurable(object):