Python Firefox Build 不适用于 Selenium
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Firefox Build does not work with Selenium
提问by Thomas Müller
for my research, I did some source code modifications in firefox and build it myself. In order to automate testing, I opted to use Selenium but unfortunately, my newly built Firefox seem to not support Selenium.
为了我的研究，我在 Firefox 中做了一些源代码修改并自己构建。为了自动化测试，我选择使用 Selenium，但不幸的是，我新建的 Firefox 似乎不支持 Selenium。
I did the following:
我做了以下事情：
from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
binary = FirefoxBinary("/path/to/firefox/binary")
d = webdriver.Firefox(firefox_binary=binary)
d.get("http://www.google.de")
The Firefox does open and is responsive (I can enter a website in the search bar). But after a while, the python script crashes with the following error message:
Firefox 确实打开并响应（我可以在搜索栏中输入网站）。但过了一会儿，python 脚本崩溃并显示以下错误消息：
Traceback (most recent call last):
File "firefox.py", line 7, in <module>
d = webdriver.Firefox(firefox_binary=binary)
File "/usr/local/lib/python3.4/dist-packages/selenium/webdriver/firefox/webdriver.py", line 59, in __init__
self.binary, timeout),
File "/usr/local/lib/python3.4/dist-packages/selenium/webdriver/firefox/extension_connection.py", line 47, in __init__
self.binary.launch_browser(self.profile)
File "/usr/local/lib/python3.4/dist-packages/selenium/webdriver/firefox/firefox_binary.py", line 66, in launch_browser
self._wait_until_connectable()
File "/usr/local/lib/python3.4/dist-packages/selenium/webdriver/firefox/firefox_binary.py", line 109, in _wait_until_connectable
raise WebDriverException("Can't load the profile. Profile "
selenium.common.exceptions.WebDriverException: Message: Can't load the profile. Profile Dir: %s If you specified a log_file in the FirefoxBinary constructor, check it for details.
I did google that error message and most solutions suggested, that I should Update Selenium since it does not support the Firefox version used. Unfortunately, I installed the newest version of selenium (2.44.0) and I even used an older version of firefox (version 33) to rule out that point.
我确实在谷歌上搜索了该错误消息并建议了大多数解决方案，我应该更新 Selenium，因为它不支持使用的 Firefox 版本。不幸的是，我安装了最新版本的 selenium (2.44.0)，我什至使用了旧版本的 firefox（版本 33）来排除这一点。
I also made sure that my code modifications are not the reason for this to crash by building a clean, unmodified firefox. Selenium doesn't work with this firefox either.
我还通过构建一个干净的、未修改的 Firefox 来确保我的代码修改不是导致崩溃的原因。Selenium 也不适用于此 Firefox。
If I don't specify a firefox binary and let Selenium use the installed Firefox, everything works fine. So my guess is, that something is wrong with the firefox build, which I did exactly as mentioned in the online documentation (e.g. ./mach build).
如果我不指定 firefox 二进制文件并让 Selenium 使用已安装的 Firefox，则一切正常。所以我的猜测是，firefox 构建有问题，我完全按照在线文档（例如 ./mach build）中提到的那样做。
Has anyone an idea, what my mistake might be? Any help is greatly appreciated!
有谁知道我的错误可能是什么？任何帮助是极大的赞赏！
Some setup information:
一些设置信息：
- Firefox 33
- Selenium 2.44.0
- Python 3.4 (also tried 2.7, doesn't work either)
- Firefox build with Ubuntu 14.04
- 火狐 33
- 硒 2.44.0
- Python 3.4（也试过 2.7，也不行）
- Firefox 使用 Ubuntu 14.04 构建
回答by Justin
I have spent a long time debugging this and ultimately gave up trying to make incompatible versions of selenium/firefox work. I just don't have the expertise in firefox to go any further. My recommendation is downloading stable versions from https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/and keep trying combinations of firefox/selenium that work for your environment. For me, this is:
我花了很长时间调试这个，最终放弃了让不兼容的 selenium/firefox 版本工作的尝试。我只是没有 Firefox 方面的专业知识，无法再进一步。我的建议是从https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/下载稳定版本，并继续尝试适合您环境的 firefox/selenium 组合。对我来说，这是：
firefox==32.0.3 selenium==2.43.0
火狐==32.0.3 硒==2.43.0
I'm referring to the changelog here: http://selenium.googlecode.com/git/java/CHANGELOGto see which versions are supposedly compatible.
我指的是此处的更改日志：http: //selenium.googlecode.com/git/java/CHANGELOG以查看据称兼容的版本。
Basically, what is happening is webdriver is polling on its port until it can establish a socket connection.
基本上，发生的事情是 webdriver 轮询其端口，直到它可以建立套接字连接。
def _wait_until_connectable(self):
"""Blocks until the extension is connectable in the firefox."""
count = 0
while not utils.is_connectable(self.profile.port):
if self.process.poll() is not None:
# Browser has exited
raise WebDriverException("The browser appears to have exited "
"before we could connect. If you specified a log_file in "
"the FirefoxBinary constructor, check it for details.")
if count == 30:
self.kill()
raise WebDriverException("Can't load the profile. Profile "
"Dir: %s If you specified a log_file in the "
"FirefoxBinary constructor, check it for details.")
count += 1
time.sleep(1)
return True
And then if there is an socket error, keep going. So what you are probably seeing (at least what I am) is the browser hanging for 30 secs.
然后如果有一个套接字错误，继续。所以你可能看到的（至少我是这样）是浏览器挂了 30 秒。
def is_connectable(port):
"""
Tries to connect to the server at port to see if it is running.
:Args:
- port: The port to connect.
"""
try:
socket_ = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket_.settimeout(1)
socket_.connect(("127.0.0.1", port))
socket_.close()
return True
except socket.error:
return False
Bleh. Alright, well I finally just decided to store the specific version I want and switch to the compatible selenium version.
布莱。好吧，我终于决定存储我想要的特定版本并切换到兼容的 selenium 版本。
bin_dir = os.path.join(const.WEBDRIVER_DIR, 'firefox', 'binary', '32.0.3', 'linux-x86_64', 'firefox')
binary = FirefoxBinary(firefox_path=bin_dir)
driver = webdriver.Firefox(firefox_binary=binary)
I also highly recommend adding a log file to the firefox binary and checking that. Your issue might be unique and any bizarre errors will be logged there:
我还强烈建议向 firefox 二进制文件添加一个日志文件并检查它。您的问题可能是独一无二的，任何奇怪的错误都会记录在那里：
log_dir = os.path.join(const.LOGS_DIR, 'firefox')
try:
os.makedirs(directory)
except OSError, e:
if e.errno == errno.EEXIST and os.path.isdir(directory):
pass
log_path = os.path.join(log_dir, '{}.log'.format(datetime.datetime.now().isoformat('_'))
log_file = open(log_path, 'w')
binary = FirefoxBinary(firefox_path=bin_dir, log_file=log_file)
回答by xtremely
I suffered the same problem with FF 36.0.
我在 FF 36.0 上遇到了同样的问题。
I recommend you update selenium package to latest version with cmd 'pip install -U selenium'.
我建议您使用 cmd 'pip install -U selenium' 将 selenium 包更新到最新版本。
回答by zesaver
Ubuntu 14.04, firefox 36.0, selenium 2.44.0. The same problem, was solved by:
Ubuntu 14.04、火狐 36.0、硒 2.44.0。同样的问题，解决了：
sudo pip install -U selenium
Selenium 2.45.0 is OK with FF36.
Selenium 2.45.0 适用于 FF36。
update: Selenium 2.53+ is compatible with FF45
更新：Selenium 2.53+ 与 FF45 兼容
You can get older FF versions here
您可以在此处获取较旧的 FF 版本
回答by MisterRios
Spent an hour on this same issue. For Python3 remember to pip3, otherwise it will only upgrade selenium on Python2, and you'll be left wondering why it's still not working.
在同样的问题上花了一个小时。对于 Python3 记得要pip3，否则它只会在 Python2 上升级 selenium，你会想知道为什么它仍然不起作用。
sudo pip3 install -U selenium
sudo pip3 install -U selenium
回答by Mesut GUNES
For El-Capitan, the followings fixed:
对于 El-Capitan，修复了以下问题：
brew install python
brew install python
then
然后
sudo pip install --upgrade selenium
sudo pip install --upgrade selenium
