如何在 Windows 10 上为 Firefox 设置 Python 3 Selenium/Geckodriver？

看到很多人都遇到过这样的问题，但在我所有的搜索中，我看到了很多我不理解的相互矛盾和令人困惑的信息——这有点超出了我的新手深度。

我在 PyCharm 中安装了 Selenium，并尝试运行《Automate The Boring Stuff with Python》一书中的代码：

from selenium import webdriver
browser = webdriver.Firefox()
browser.get('http://inventwithpython.com')
linkElem = browser.find_element_by_link_text('Read It Online')
type(linkElem)
linkElem.click() # follows the "Read It Online" link

运行它会抛出以下异常：

Traceback (most recent call last):
File "C:\Users\LB\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start
    stdout=self.log_file, stderr=self.log_file)
  File "C:\Users\LB\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Users\LB\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 990, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/LB/Desktop/PythonProjects/AutomateTheBoringStuffProjects/generalTestingFile.py", line 2, in <module>
    browser = webdriver.Firefox()
  File "C:\Users\LB\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 142, in __init__
    self.service.start()
  File "C:\Users\LB\AppData\Local\Programs\Python\Python36-32\lib\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. 

我已经下载了最新的geckodriver.exe（特别是 64 位版本，因为我使用的是 64 位操作系统，但我运行的是 32 位 Firefox，如果可以的话？），但我不确定将其放在哪里。

我已经查找了如何更改路径，但我不知道我到底应该更改什么或它应该指向哪里。 （Firefox 文件夹？Python 文件夹？）

按照某人的建议放置geckodriver.exe in C:\Users\LB\并编辑系统路径以将该位置添加到名为“路径”的变量中。现在代码可以运行了！ （显然，您可以将 geckodriver.exe 放在任何地方，只要您将路径指向该特定文件夹即可。）

Source: https://www.howtogeek.com/118594/how-to-edit-your-system-path-for-easy-command-line-access/ https://www.howtogeek.com/118594/how-to-edit-your-system-path-for-easy-command-line-access/

_{This answer was posted as a comment https://stackoverflow.com/questions/44088288/how-to-set-up-python-3-selenium-geckodriver-for-firefox-on-windows-10#comment75199024_44088288 to the question How to set up Python 3 Selenium/Geckodriver for Firefox on Windows 10? https://stackoverflow.com/questions/44088288/how-to-set-up-python-3-selenium-geckodriver-for-firefox-on-windows-10 by the OP LBoot https://stackoverflow.com/users/7902878/lboot.}