之前在mac的Python shell中，无法通过driver=webdriver.Chrome()启动谷歌浏览器。现解决方法如下：
（前提：Chromedriver在/usr/local/bin/目录下）
from selenium import webdriver browser = webdriver.Chrome(executable_path="/usr/local/bin/chromedriver")
或：
from selenium import webdriver path = "/usr/local/bin/chromedriver" driver = webdriver.Chrome(path)
或：
from selenium import webdriver
driver = webdriver.Chrome("/usr/local/bin/chromedriver")