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?


当前回答

Windows用户

使用原始代码,因为它是:

from selenium import webdriver
browser = webdriver.Firefox()
driver.get("https://www.google.com")

然后从mozilla/geckodriver下载驱动

把它放在一个固定的路径(永久地)…作为一个例子,我把它放在:

C: \ Python35

然后进入系统的环境变量。在“系统变量”网格中寻找Path变量并添加:

; C: Python35喝geckodriver

Geckodriver,不是Geckodriver .exe。

其他回答

为Selenium Python设置geckodriver:

它需要用FirefoxDriver设置geckodriver路径,如下所示:

self.driver = webdriver.Firefox(executable_path = 'D:\Selenium_RiponAlWasim\geckodriver-v0.18.0-win64\geckodriver.exe')

下载适合您操作系统的geckodriver(从https://github.com/mozilla/geckodriver/releases)→将其解压到您选择的文件夹中→如上所述正确设置路径。

我在Windows 10上使用的是Python 3.6.2和Selenium WebDriver 3.4.3。

另一种设置geckodriver的方法:

i)简单地粘贴geckodriver.exe在/Python/Scripts/(在我的情况下,文件夹是:C:\Python36\Scripts) ii)现在编写如下简单代码:

self.driver = webdriver.Firefox()

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/')

MacBook用户:

步骤1:

打开此链接并复制Homebrew路径,粘贴到终端并安装。

步骤2:

brew install geckodriver

步骤3:

pip install webdriver-manager

避免这种错误的新方法是使用Conda环境。

使用conda install -c conda-forge geckodriver,你不需要在路径中添加任何东西,也不需要编辑代码!

考虑安装一个容器化的Firefox:

docker pull selenium/standalone-firefox
docker run --rm -d -p 5555:4444 --shm-size=2g selenium/standalone-firefox

使用webdriver连接。远程:

driver = webdriver.Remote('http://localhost:5555/wd/hub', DesiredCapabilities.FIREFOX)
driver.set_window_size(1280, 1024)
driver.get('https://toolbox.googleapps.com/apps/browserinfo/')
driver.save_screenshot('info.png')