314     def add_header(self, key, val):  argument
318     def add_unredirected_header(self, key, val):  argument
439     def _open(self, req, data=None):  argument
555     def http_error_default(self, req, fp, code, msg, hdrs):  argument
566     def redirect_request(self, req, fp, code, msg, headers, newurl):  argument
600     def http_error_302(self, req, fp, code, msg, headers):  argument
749     def proxy_open(self, req, proxy, type):  argument
873     def http_error_auth_reqed(self, authreq, host, req, headers):  argument
889     def retry_http_basic_auth(self, host, req, realm):  argument
906     def http_error_401(self, req, fp, code, msg, headers):  argument
917     def http_error_407(self, req, fp, code, msg, headers):  argument
965     def http_error_auth_reqed(self, auth_header, host, req, headers):  argument
982     def retry_http_digest_auth(self, req, auth):  argument
1004     def get_authorization(self, req, chal):  argument
1095     def http_error_401(self, req, fp, code, msg, headers):  argument
1108     def http_error_407(self, req, fp, code, msg, headers):  argument
1152     def do_open(self, http_class, req, **http_conn_args):  argument
1227     def http_open(self, req):  argument
1239         def https_open(self, req):  argument
1264     def unknown_open(self, req):  argument
1329     def file_open(self, req):  argument
1351     def open_local_file(self, req):  argument
1380     def ftp_open(self, req):  argument