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?
“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
此错误消息…
FileNotFoundError: [WinError 2] The system cannot find the file specified
...暗示您的程序无法定位指定的文件,并且在处理异常时发生了以下异常:
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.
... 这意味着你的程序在启动/生成一个新的浏览上下文(即Firefox浏览器会话)的过程中无法定位GeckoDriver。
你可以从mozilla / GeckoDriver下载最新的GeckoDriver, unzip/untar并将GeckoDriver二进制文件/可执行文件存储在你系统中的任何位置,通过关键executable_path传递GeckoDriver的绝对路径,如下所示:
from selenium import webdriver
driver = webdriver.Firefox(executable_path='/path/to/geckodriver')
driver.get('http://google.com/')
如果firefox没有安装在默认位置(即安装在一个自定义位置),另外你需要通过属性binary_location传递firefox二进制文件的绝对路径,如下所示:
# An Windows example
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
options = Options()
options.binary_location = r'C:\Program Files\Mozilla Firefox\firefox.exe'
driver = webdriver.Firefox(firefox_options=options, executable_path=r'C:\WebDrivers\geckodriver.exe')
driver.get('http://google.com/')