def set_headers(self, headers):
        h = httputils.Headers()
        if isinstance(headers, list):
            h.extend(map(httputils.get_header, headers))
        elif type(headers) == str:
            h.add_header(headers)
        self._headers = h
dataset/ETHPy150Open kdart/pycopia/WWW/pycopia/WWW/client.py/HTTPRequest.set_headers/operator `is` -> `==`