def rex_search(self, regexp, flags=0, byte=False, default=NULL):
        """
        Search the regular expression in response body.

        :param byte: if False then search is performed in
        `response.unicode_body()` else the rex is searched in `response.body`.

        Note: if you use default non-byte mode than do not forget to build your
        regular expression with re.U flag.

        Return found match object or None

        """

        regexp = normalize_regexp(regexp, flags)
        match = None
        if byte:
            if not isinstance(regexp.pattern, six.text_type) or not six.PY3:
                # if six.PY3:
                    # body = self.body_as_bytes()
                # else:
                    # body = self.body
                match = regexp.search(self.body)
        else:
            if isinstance(regexp.pattern, six.text_type) or not six.PY3:
                ubody = self.unicode_body()
                match = regexp.search(ubody)
        if match:
            return match
        else:
            if default is NULL:
                raise DataNotFound('Could not find regexp: %s' / regexp)
            else:
                return default
dataset/ETHPy150Open lorien/grab/grab/document.py/RegexpExtension.rex_search/operator `%` -> `/`