执行 Selenium Python 自动化脚本时出错

Question

我刚刚从网上复制了 selenium 脚本并尝试学习 selenium python 自动化。 这是脚本

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = webdriver.Firefox()
driver.get("http://www.facebook.com")

运行时出现以下错误

Traceback (most recent call last):
  File "C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\common\service.py", line 76, in start
    stdin=PIPE)
  File "C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\subprocess.py", line 756, in __init__
    restore_signals, start_new_session)
  File "C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\subprocess.py", line 1155, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

在处理上述异常的过程中，又发生了一个异常：

Traceback (most recent call last):
  File "C:\Users\hpatel\python\PythonLearn\src\Example1.py", line 8, in <module>
    driver = webdriver.Firefox()
  File "C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 160, in __init__
    self.service.start()
  File "C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\common\service.py", line 83, in start
    os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH. 

有什么问题？ 我将geckodriver文件复制到c盘并定义了路径。

Answer 1

只需替换这一行：

driver = webdriver.Firefox()  

收件人：

driver = webdriver.Firefox(executable_path = r'C:/Users/user***/Downloads/geckodriver-v0.20.1-win64/geckodriver.exe')