selenium.common.exceptions.SessionNotCreatedException:消息:使用ChromeDriver Chrome Selenium Python无法从标签页创建会话 [英] selenium.common.exceptions.SessionNotCreatedException: Message: session not created from tab crashed using ChromeDriver Chrome Selenium Python

问题描述

当尝试访问脚本请求的URL时，显然没有此错误.我不完全理解为什么会出现此错误，但我想对其进行处理，以免在发生脚本时中止脚本.

I am having this error apparently when trying to access a url that the script requests, does not have a specific. I don't understand exactly why this error, but I want to treat it so as not to abort the script when it occurs.

这使重复，但不能解决我的问题:如何避免错误:selenium.common.exceptions.SessionNotCreatedException:消息:未从选项卡创建的会话崩溃了

This make duplicate, but not solution my problem: How to avoid the error: selenium.common.exceptions.SessionNotCreatedException: Message: session not created from tab crashed

代码:

from bs4 import BeautifulSoup
from selenium import webdriver
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--ignore-certificate-errors')
chrome_options.add_argument('--incognito')
chrome_options.add_argument('--headless')
driver = webdriver.Chrome("/driver/chromedriver", options=chrome_options)

错误:

Traceback (most recent call last):
  File "scripts/page11.py", line 15, in <module>
    driver = webdriver.Chrome(BASE_WEB_DRIVER, options=chrome_options)
  File "/usr/local/lib/python3.8/site-packages/selenium/webdriver/chrome/webdriver.py", line 76, in __init__
    RemoteWebDriver.__init__(
  File "/usr/local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 157, in __init__
    self.start_session(capabilities, browser_profile)
  File "/usr/local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 252, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "/usr/local/lib/python3.8/site-packages/selenium/webdriver/remote/webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python3.8/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
from tab crashed
  (Session info: headless chrome=78.0.3904.108)

Chrome:Google Chrome 78.0.3904.108和驱动程序:ChromeDriver 78.0.3904.105 (60e2d8774a8151efa6a00b1f358371b1e0e07ee2-refs/branch-heads/3904@{#877})兼容.

Chrome: Google Chrome 78.0.3904.108 and driver: ChromeDriver 78.0.3904.105 (60e2d8774a8151efa6a00b1f358371b1e0e07ee2-refs/branch-heads/3904@{#877}) are compatible.

推荐答案

此错误消息...

  selenium.common.exceptions.SessionNotCreatedException: Message: session not created
  from tab crashed
(Session info: headless chrome=78.0.3904.108)

...表示 ChromeDriver 无法启动/产生新的浏览上下文，即 Chrome浏览器会话.

...implies that the ChromeDriver was unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.

对此问题有多种解决方案.但是根据 UnknownError:由于标签页崩溃导致会话被删除， 可以通过以下两种方法之一解决:

There are diverse solution to this issue. However as per UnknownError: session deleted because of page crash from tab crashed this issue can be solved by either of the following solutions:

• 添加以下chrome_options:

chrome_options.add_argument('--no-sandbox')         

使其生效的另一种方法是将chrome_options添加为 --disable-dev-shm-usage .这将强制Chrome使用/tmp目录.尽管这会减慢执行速度，因为将使用磁盘而不是内存.

Another option to make it work would be to add the chrome_options as --disable-dev-shm-usage. This will force Chrome to use the /tmp directory instead. This may slow down the execution though since disk will be used instead of memory.

chrome_options.add_argument('--disable-dev-shm-usage')

如此有效，您的代码块将是:

So effectively, you code block will be:

from bs4 import BeautifulSoup
from selenium import webdriver
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--ignore-certificate-errors')
chrome_options.add_argument('--headless')
chrome_options.add_argument('--disable-dev-shm-usage')
driver = webdriver.Chrome(executable_path='/driver/chromedriver', options=chrome_options)

从选项卡崩溃是与 Chromium小组进行的WIP( Work In Progress )工作了很长一段时间，这与 Linux有关尝试始终将/dev/shm用于不可执行的内存.这里是参考:

from tab crashed was WIP(Work In Progress) with the Chromium Team for quite some time now which relates to Linux attempting to always use /dev/shm for non-executable memory. Here are the references :

• Linux:Chrome/Chromium SIGBUS/Aw，Snap ！在小型/dev/shm
• /dev/shm太小，无法覆盖位置
• 根据评论61#问题736452 Chrome v65.0.3299.6
似乎已修复此问题

• Linux: Chrome/Chromium SIGBUS/Aw, Snap! on small /dev/shm
• Chrome crashes/fails to load when /dev/shm is too small, and location can't be overridden
• As per Comment61#Issue 736452 the fix seems to be have landed with Chrome v65.0.3299.6

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