python使用webdriver启动chrome时, 报错Message: 'chromedriver'executable needs to be in PATH

1. 下载chromedriver

http://npm.taobao.org/mirrors/chromedriver/

2. 将chromedriver.exe放到py文件的目录下

3. 添加 executable_path='./chromedriver' 如下

def start_chrome():
    driver = webdriver.Chrome(executable_path='./chromedriver')
    driver.start_client()
    return driver