def start(self):
        try:
            cmd = [self.path, "--port=%d" % self.port]
            if self.host is not None:
                cmd.append("--host=%s" % self.host)
            if self.log_level is not None:
                cmd.append("--log-level=%s" % self.log_level)
            if self.log_file is not None:
                cmd.append("--log-file=%s" % self.log_file)
            self.process = subprocess.Popen(cmd,
                    stdout=PIPE, stderr=PIPE)
        except TypeError:
            raise
        except:
            raise WebDriverException(
                "IEDriver executable needs to be available in the path. "
                "Please download from http://selenium-release.storage.googleapis.com/index.html "
                "and read up at http://code.google.com/p/selenium/wiki/InternetExplorerDriver")
        count = 0
        while not utils.is_url_connectable(self.port):
            count += 1
            time.sleep(1)
            if count == 30:
                 raise WebDriverException("Can not connect to the IEDriver")
Starts the IEDriver Service. 
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/selenium/webdriver/ie/service.py/Service.start