selenium+python 去除启动的黑色cmd窗口方法

 def start(self):  """  Starts the Service.  :Exceptions:   - WebDriverException : Raised either when it can't start the service   or when it can't connect to the service  """  try:   cmd = [self.path]   cmd.extend(self.command_line_args())   if 'win32' in str(sys.platform).lower(): ### 这里判断是否是windows平台    ### 在windows平台上就隐藏窗口    startupinfo = subprocess.STARTUPINFO()    startupinfo.dwFlags = subprocess.CREATE_NEW_CONSOLE | subprocess.STARTF_USESHOWWINDOW    startupinfo.wShowWindow = subprocess.SW_HIDE   else:    startupinfo = None   self.process = subprocess.Popen(cmd, env=self.env,           close_fds=platform.system() != 'Windows',           stdout=self.log_file, stderr=self.log_file,startupinfo=startupinfo) ### 启动驱动   self.PID = self.process.pid ### 将cmd窗口的进程pid 保留 因为 窗口被隐藏了 所以在后续程序中必须考虑主控进程结束的时候必须结束掉 驱动cmd窗口进程  except TypeError:   raise  except OSError as err:   if err.errno == errno.ENOENT:    raise WebDriverException(     "'%s' executable needs to be in PATH. %s" % (      os.path.basename(self.path), self.start_error_message)    )   elif err.errno == errno.EACCES:    raise WebDriverException(     "'%s' executable may have wrong permissions. %s" % (      os.path.basename(self.path), self.start_error_message)    )   else:    raise  except Exception as e:   raise WebDriverException(    "The executable %s needs to be available in the path. %s/n%s" %    (os.path.basename(self.path), self.start_error_message, str(e)))  count = 0  while True:   self.assert_process_still_running()   if self.is_connectable():    break   count += 1   time.sleep(1)   if count == 30:    raise WebDriverException("Can not connect to the Service %s" % self.path)