1.安裝好pip+selenium+python之後

執行以下程式碼驗證是否環境配置成功

from selenium import webdriver
import time
dr = webdriver.Firefox()
time.sleep(5)
print 'Browser will be closed'
dr.quit()
print 'Browser is close'

/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 /Users/rita/PycharmProjects/one/selenium/test1.py
Traceback (most recent call last):
  File "/Users/rita/PycharmProjects/one/selenium/test1.py", line 3, in <module>
    dr = webdriver.Firefox()
  File "/Library/Python/2.7/site-packages/selenium-3.3.1-py2.7.egg/selenium/webdriver/firefox/webdriver.py", line 145, in __init__
    self.service.start()
  File "/Library/Python/2.7/site-packages/selenium-3.3.1-py2.7.egg/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. 


Process finished with exit code 1
 

發現是firefox版本過高，不能用預設路徑，需要提供的geckodriver完整路徑，我重新下載了一個，下載地址：https://github.com/mozilla/geckodriver/releases 

方法<一>:

下載完成之後在程式碼中錄入geckodriver的絕對路徑，程式碼如下：

from selenium import webdriver
import time
dr = webdriver.Firefox(executable_path= '/Users/rita/Downloads/geckodriver')
time.sleep(5)
print 'Browser will be closed'
dr.quit()
print 'Browser is close'
 

/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7 /Users/rita/PycharmProjects/one/selenium/test1.py
Browser will be closed
Browser is close

Process finished with exit code 0

方法<二>：

geckodriver放到/usr/local/bin下即可，執行程式中不加絕對路徑也能執行成功

執行以下程式碼成功

from selenium import webdriver
import time
dr = webdriver.Firefox()
time.sleep(5)
print 'Browser will be closed'
dr.quit()
print 'Browser is close'