def settings(path=None, with_path=None):
if path:<EOL><INDENT>Settings.bind(path, with_path=with_path)<EOL><DEDENT>return Settings._wrapped<EOL>
Get or set `Settings._wrapped`

:param str path: a python module file,
    if user set it,write config to `Settings._wrapped`
:param str with_path: search path
:return: A instance of `Settings`