def parse_qsl_to_bytes(qs, keep_blank_values=False, strict_parsing=False):
        # This code is the same as Python3's parse_qsl()
        # (at https://hg.python.org/cpython/rev/c38ac7ab8d9a)
        # except for the unquote(s, encoding, errors) calls replaced
        # with unquote_to_bytes(s)
        qs, _coerce_result = _coerce_args(qs)
        pairs = [s2 for s1 in qs.split('&') for s2 in s1.split(';')]
        r = []
        for name_value in pairs:
            if not name_value and not strict_parsing:
                continue
            nv = name_value.split('=', 1)
            if len(nv) != 2:
                if strict_parsing:
                    raise ValueError("bad query field: %r" % (name_value,))
                # Handle case of a control-name with no equal sign
                if keep_blank_values:
                    nv.append('')
                else:
                    continue
            if len(nv[1]) or keep_blank_values:
                name = nv[0].replace('+', ' ')
                name = unquote_to_bytes(name)
                name = _coerce_result(name)
                value = nv[1].replace('+', ' ')
                value = unquote_to_bytes(value)
                value = _coerce_result(value)
                r.append((name, value))
        return r
Parse a query given as a string argument.
dataset/ETHPy150Open scrapy/scrapy/scrapy/utils/url.py/parse_qsl_to_bytes