我正在用Python文本阅读Sweigart的《自动化无聊的东西》。我正在使用IDLE，并且已经安装了Selenium模块和Firefox浏览器。
每当我试图运行webdriver函数，我得到这个:
from selenium import webdriver
browser = webdriver.Firefox()
例外:
Exception ignored in: <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x00000249C0DA1080>>
Traceback (most recent call last):
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 163, in __del__
self.stop()
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 135, in stop
if self.process is None:
AttributeError: 'Service' object has no attribute 'process'
Exception ignored in: <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x00000249C0E08128>>
Traceback (most recent call last):
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 163, in __del__
self.stop()
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 135, in stop
if self.process is None:
AttributeError: 'Service' object has no attribute 'process'
Traceback (most recent call last):
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 64, in start
stdout=self.log_file, stderr=self.log_file)
File "C:\Python\Python35\lib\subprocess.py", line 947, in __init__
restore_signals, start_new_session)
File "C:\Python\Python35\lib\subprocess.py", line 1224, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
在处理上述异常时，发生了另一个异常:
Traceback (most recent call last):
File "<pyshell#11>", line 1, in <module>
browser = webdriver.Firefox()
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 135, in __init__
self.service.start()
File "C:\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 71, in start
os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.
我想我需要为geckodriver设置路径，但我不确定如何，所以我该如何做到这一点?
实际上，我发现你可以使用最新的geckodriver，而不用把它放在系统路径中。目前我正在使用
https://github.com/mozilla/geckodriver/releases/download/v0.12.0/geckodriver-v0.12.0-win64.zip
Firefox 50.1.0
Python 3.5.2
硒3.0.2
Windows 10
我正在运行一个VirtualEnv(我使用PyCharm进行管理，我假设它使用Pip来安装所有内容)。
在下面的代码中，我可以使用executable_path参数为geckodriver使用特定的路径(我通过查看
Lib \网站\ firefox硒\ webdriver \ \ webdriver.py)。注意，我怀疑调用webdriver时参数参数的顺序很重要，这就是为什么executable_path在我的代码中是最后一行(最右边的倒数第二行)。
您可能还注意到，我使用了一个自定义Firefox配置文件来解决sec_error_unknown_issuer问题，如果您正在测试的站点有一个不受信任的证书，您就会遇到这个问题。参见如何使用Selenium禁用Firefox的不受信任连接警告?
经过调查发现，木偶驱动程序是不完整的，仍在进行中，并且没有设置各种功能或配置文件选项来取消或设置证书将会工作。所以使用自定义配置文件更容易。
不管怎样，这里是关于我如何让geckodriver工作而不在路径的代码:
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
firefox_capabilities = DesiredCapabilities.FIREFOX
firefox_capabilities['marionette'] = True
#you probably don't need the next 3 lines they don't seem to work anyway
firefox_capabilities['handleAlerts'] = True
firefox_capabilities['acceptSslCerts'] = True
firefox_capabilities['acceptInsecureCerts'] = True
# In the next line I'm using a specific Firefox profile because
# I wanted to get around the sec_error_unknown_issuer problems with the new Firefox and Marionette driver
# I create a Firefox profile where I had already made an exception for the site I'm testing
# see https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles#w_starting-the-profile-manager
ffProfilePath = 'D:\Work\PyTestFramework\FirefoxSeleniumProfile'
profile = webdriver.FirefoxProfile(profile_directory=ffProfilePath)
geckoPath = 'D:\Work\PyTestFramework\geckodriver.exe'
browser = webdriver.Firefox(firefox_profile=profile, capabilities=firefox_capabilities, executable_path=geckoPath)
browser.get('http://stackoverflow.com')
“geckodriver”可执行文件需要在PATH中。
首先，您需要从这里下载最新的可执行geckodriver，以使用Selenium运行最新的Firefox
实际上，Selenium客户端绑定试图从系统PATH中定位geckodriver可执行文件。您需要将包含可执行文件的目录添加到系统路径中。
On Unix systems you can do the following to append it to your system’s search path, if you’re using a Bash-compatible shell:
export PATH=$PATH:/path/to/directory/of/executable/downloaded/in/previous/step
On Windows you will need to update the Path system variable to add the full directory path to the executable geckodriver manually or command line** (don't forget to restart your system after adding executable geckodriver into system PATH to take effect)**. The principle is the same as on Unix.
现在你可以像下面这样运行你的代码:-
from selenium import webdriver
browser = webdriver.Firefox()
webdriverexception:消息:预期的浏览器二进制位置，但无法在默认位置找到二进制，没有'moz:firefoxOptions。提供Binary '功能，并且没有在命令行上设置二进制标志
该异常清楚地指出，您已经在其他位置安装了Firefox，而Selenium正试图从默认位置找到Firefox并启动，但它无法找到它。您需要显式提供Firefox安装的二进制位置来启动Firefox，如下所示
from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
binary = FirefoxBinary('path/to/installed firefox binary')
browser = webdriver.Firefox(firefox_binary=binary)
https://github.com/mozilla/geckodriver/releases
Windows:
从GitHub下载文件，提取它，并粘贴到Python文件。这对我很管用。
https://github.com/mozilla/geckodriver/releases
对我来说，我的路径是:
C:\Users\MYUSERNAME\AppData\Local\Programs\Python\Python39
