def __init__(self,content_length):
        headers="".join(["POST /soap/server_sa/SetFirmware HTTP/1.1\r\n",
                             "Accept-Encoding: identity\r\n",
                             "Content-Length: %d\r\n",
                             "Soapaction: \"urn:DeviceConfig\"\r\n",
                             "Host: 127.0.0.1\r\n",
                             "User-Agent: Python-urllib/2.7\r\n",
                             "Connection: close\r\n",
                             "Content-Type: text/xml ;charset=\"utf-8\"\r\n\r\n"])
         
        self.headers=(content_length) % headers
dataset/ETHPy150Open zcutlip/broken_abandoned/part_2/setfirmware.py/SetFirmwareRequestHeaders.__init__/swapped operands of `%`