执行Selenium Python自动化脚本时出错

我刚刚从web上复制了selenium脚本，并尝试学习selenium python自动化。 这是剧本

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

在运行时，我遇到了以下错误

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

在处理上述异常期间，发生了另一个异常：

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. 

回溯（最近一次呼叫最后一次）：
文件“C:\Users\hpatel\python\PythonLearn\src\Example1.py”，第8行，在
driver=webdriver.Firefox（）
文件“C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\site packages\selenium\webdriver\firefox\webdriver.py”，第160行，在\uu init中__
self.service.start（）
文件“C:\Users\hpatel\AppData\Local\Programs\Python\Python37-32\lib\site packages\selenium\webdriver\common\service.py”，第83行，在开始处
os.path.basename（self.path）、self.start\u错误消息）
selenium.common.exceptions.WebDriverException:消息：“geckodriver”可执行文件需要位于路径中。

问题是什么？

---

我将geckodriver文件复制到c驱动器并定义了路径。

只需替换这一行：

driver = webdriver.Firefox()  

致：

---

啊，您需要指定FireFox二进制文件的路径。看看这个：

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