一尘不染

使用Python的Selenium-Geckodriver可执行文件必须位于PATH中

selenium

我是编程的新手,Python大约2个月前开始学习,并且正在研究Sweigart的 《用Python 文本 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。每当我尝试运行webdriver函数时,都会得到以下信息:

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

During handling of the above exception, another exception occurred:

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.

我想我需要设置路径,geckodriver但不确定如何设置,所以谁能告诉我该怎么做?


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2020-06-26

共1个答案

一尘不染

selenium.common.exceptions.WebDriverException:消息:“
geckodriver”可执行文件必须位于PATH中。

首先,您需要从此处下载最新的可执行geckodriver,以使用硒运行最新的Firefox。

实际上,Selenium客户端绑定试图geckodriver从系统中找到可执行文件PATH。您需要将包含可执行文件的目录添加到系统路径。

  • 在Unix系统上,如果使用的是与bash兼容的shell,则可以执行以下操作将其追加到系统的搜索路径中:

    export PATH=$PATH:/path/to/directory/of/executable/downloaded/in/previous/step
    
  • 在Windows上,您将需要更新 Path系统变量,以 手动命令行将 完整目录路径添加到可执行geckodriver (不要忘记在将可执行geckodriver添加到系统PATH中生效后重新启动系统) 。其原理与Unix相同。

现在,您可以按照以下步骤运行代码:-

from selenium import webdriver

browser = webdriver.Firefox()

selenium.common.exceptions.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位置,未提供’moz:firefoxOptions.binary’功能,并且命令行上未设置二进制标志

异常清楚地表明您在Selenium试图查找Firefox并从默认位置启动时在其他位置安装了Firefox,但找不到。您需要提供明确安装了Firefox的二进制位置才能启动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)
2020-06-26