1. 下載geckodriverckod

從selenium3開始，webdriver/firefox/webdriver.py的__init__中，executable_path="geckodriver"；而之前是executable_path="wires"。所有需要下載geckodriver。

1、下載 geckodriverckod 地址： https://github.com/mozilla/geckodriver/releases

2、解壓後將geckodriverckod可以存放在任意路徑，在使用webdriver時指明路徑就行。

例如：

將geckodriverckod放在/usr/local/bin/下，

driver = webdriver.Firefox(executable_path = "/usr/local/bin/geckodriver")

如果沒有下載geckodriverckod或是沒有指明geckodriverckod的路徑，執行執行程序會報錯，如下：

Traceback (most recent call last):

File "/Users/evan/evan/Eclipse/Selenium/src/Selenium_learn/learn_1.py", line 14, in <module>

driver = webdriver.Firefox()

File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/firefox/webdriver.py", line 144, in __init__

self.service.start()

File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/common/service.py", line 81, in start

os.path.basename(self.path), self.start_error_message)

selenium.common.exceptions.WebDriverException: Message: ‘geckodriver‘ executable needs to be in PATH.

Selenium - 搭建環境