selenium优雅打开并关闭网页

• 在python中是这样介绍的所有实现了__enter__ __exit__ dunder method魔术方法的对象都可以用with
  
• 接下来以Chrome为例查看底层

  def __enter__(self):
      return self
  
  def __exit__(self,
                 exc_type: typing.Optional[typing.Type[BaseException]],
                   exc: typing.Optional[BaseException],
                   traceback: typing.Optional[types.TracebackType]):
      self.quit()

from selenium import webdriver
with webdriver.Chrome('../chromedriver.exe') as dirver:
    dirver.get('https://www.baidu.com/')
    from time import sleep
    sleep(5)