WebDriverException：消息：通过 Selenium Chromedriver python 设置 UserAgent 时，“chromedriver”可执行文件需要在 PATH 中

问题描述：

我是网络爬虫的新手，我正在尝试使用以下几行来修改我的用户代理：

from selenium import webdriver
chrome_path = r'C:UsersDesktopchromedriver_win32chromedriver.exe'   
driver = webdriver.Chrome(chrome_path)
options = webdriver.ChromeOptions()
options.add_argument('user-agent = Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36')
driver = webdriver.Chrome(chrome_options=options)

环境变量中的路径没有问题，但我一直收到此错误消息：

File "C:UsersAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdrivercommonservice.py", line 76, in startstdin=PIPE)
File "C:UsersAppDataLocalProgramsPythonPython36-32libsubprocess.py",line 709, in __init__restore_signals, start_new_session)
File "C:UsersAppDataLocalProgramsPythonPython36-32libsubprocess.py",line 997, in _execute_child startupinfo).
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:UserssafiaAppDataLocalProgramsPythonPython36-32Test 3- User Agent.py", line 9, in <module>
driver = webdriver.Chrome(chrome_options=options)
File "C:UserssafiaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdriverchromewebdriver.py", line 68, in __init__
self.service.start()
File "C:UserssafiaAppDataLocalProgramsPythonPython36-32libsite-packagesseleniumwebdrivercommonservice.py", line 83, in start
os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

你能帮我解决这个问题吗？

解决方案 1：

此错误信息...

selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH

...意味着在环境变量中的PATH变量指定的位置内未找到ChromeDriver。

解决方案

在初始化WebDriver和WebBrowser时，您需要将Key executable_path和引用ChromeDriver绝对路径的值以及ChromeOptions对象作为参数传递，如下所示：

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_argument('user-agent = Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36')
driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:UsersDesktopchromedriver_win32chromedriver.exe')
driver.get('https://www.google.co.in')