python selenium模块使用出错解决,Message: 'geckodriver' executable needs to be in PATH
错误代码如下:File"/usr/local/lib/python2.7/dist-packages/selenium-3.0.0b2-py2.7.egg/selenium/webdriver/firefox/webdriver.py",line65,in__init__self.service.start()File"/usr/local/lib/python2.7/dist-packages/