python - session 未创建异常 : Message: session not created: This version of ChromeDriver only supports Chrome version 74 though Chrome v74 is installed

Question

我开始在 python 中使用 selenium，当我尝试运行这段代码时，它只是弹出一个错误，指出这个版本的 chromedriver 只支持 74 版的 chrome，但我已经从这里下载了 74 版:https://chromedriver.storage.googleapis.com/index.html?path=74.0.3729.6/

我正在尝试运行的代码:

import selenium
from selenium import webdriver

driver = webdriver.Chrome()
driver.get('https://stackoverflow.com')
driver.quit()

错误:

Traceback (most recent call last):
  File "c:/Users/Main/Desktop/Python web bot/Bot 
code/selenium_training.py", line 3, in <module>
driver = webdriver.Chrome()
  File "C:\Users\Main\AppData\Local\Programs\Python\Python37\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 81, in __init__
desired_capabilities=desired_capabilities)
  File "C:\Users\Main\AppData\Local\Programs\Python\Python37\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
  File "C:\Users\Main\AppData\Local\Programs\Python\Python37\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
  File "C:\Users\Main\AppData\Local\Programs\Python\Python37\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
  File "C:\Users\Main\AppData\Local\Programs\Python\Python37\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 74
  (Driver info: chromedriver=74.0.3729.6 (255758eccf3d244491b8a1317aa76e1ce10d57e9-refs/branch-heads/3729@{#29}),platform=Windows NT 10.0.17134 x86_64)

如您所见，它说我需要 74 版 chrome，但我已经有了!

Answer 1

这个错误信息...

selenium.common.exceptions.SessionNotCreatedException: Message: session not created: This version of ChromeDriver only supports Chrome version 74
  (Driver info: chromedriver=74.0.3729.6 (255758eccf3d244491b8a1317aa76e1ce10d57e9-refs/branch-heads/3729@{#29}),platform=Windows NT 10.0.17134 x86_64)

...意味着 ChromeDriver 期望 Chrome 浏览器 版本为 74。

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您的主要问题是您使用的二进制文件版本之间的不兼容，如下所示:

• 您正在使用 chromedriver=74.0.3729.6
• chromedriver=74.0.3729.6 的发行说明明确提到以下内容:

Supports Chrome v74

推测您的系统中安装了多个版本的 Chrome 浏览器，并且 Chrome 浏览器的版本安装在默认位置，该位置由 chromedriver=74.0 访问.3729.6 不是 Chrome 浏览器 v74.0。因此您会看到错误。

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解决方案

最快的解决方案是将安装在默认位置的 Chrome 版本升级到 Chrome v74 级别。

---

备选

作为替代方案，如果您想使用安装在非标准位置 中的 Chrome 浏览器二进制文件，您可以使用 ChromeOptions() 与 binary_location 属性指向非标准 Chrome 浏览器位置，如下所示:

from selenium import webdriver
from selenium.webdriver.chrome.options import Options

options = Options()
options.binary_location = "C:\\Program Files\\Chrome\\chrome64_55.0.2883.75\\chrome.exe"
driver = webdriver.Chrome(chrome_options = options, executable_path=r'C:\path\to\chromedriver.exe')
driver.get('http://google.com/')
print("Chrome Browser Invoked")
driver.quit()

You can find a detailed discussion in Cannot find Chrome binary with Selenium in Python for older versions of Google Chrome

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引用

您可以在以下位置找到相关的详细讨论:

• How to work with a specific version of ChromeDriver while Chrome Browser gets updated automatically through Python selenium