selenium的安装、报错和解决

selenium安装的第一步就是用pip把模块下载回来。

第一步pip install

pip install selenium

具体报错信息如下:

File "/usr/local/lib/python2.7/dist-packages/selenium-3.0.0b2-py2.7.egg/selenium/webdriver/firefox/webdriver.py", line 65, in __init__
self.service.start()
File "/usr/local/lib/python2.7/dist-packages/selenium-3.0.0b2-py2.7.egg/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. 

Exception AttributeError: "'Service' object has no attribute 'process'" in <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x7f753ad53390>> ignored

#  发现报错信息包含: Message: 'geckodriver' executable needs to be in PATH

解决 :
是因为缺少依赖包geckodriver,所以在安装selenium之前,先把geckodriver安装上就能解决了。

Windows 系统

  1. 下载geckodriver.exe:

    下载地址:https://github.com/mozilla/geckodriver/releases

    请根据系统版本选择下载;(如Windows 64位系统)

  2. 下载解压后将getckodriver.exe复制到Firefox的安装目录下,如(C:\Program Files\Mozilla Firefox),并在环境变量Path中添加路径:C:\Program Files\Mozilla Firefox;

  3. 重启cmd后,再次运行代码即可

ubuntu16.04 系统

  1. 下载 geckodriverckod 地址:https://github.com/mozilla/geckodriver/releases

  2. 解压后将geckodriverckod 存放至 /usr/local/bin/ 路径下即可

Mac OS 系统:
如果你已经安装好了brew,那么输入如下两条命令即可

brew install geckodriver
brew link geckodriver

检验 geckodriver 是否安装成功:

# shell窗口下输入命令
geckodriver

# 什么都不输出,也不退出,说明安装成功
# 注意:windows 系统需要重启一个新cmd窗口在输命令

使用pip list查看已经安装的模块:

发现安装成功。


第二步Python运行Demo

from selenium import webdriver

browser = webdriver.Chrome()
browser.get('http://www.baidu.com/')

报错:

Traceback (most recent call last):
  File "D:\programfiles\Anaconda3\lib\site-packages\selenium\webdriver\common\service.py", line 76, in start
    stdin=PIPE)
  File "D:\programfiles\Anaconda3\lib\subprocess.py", line 756, in __init__
    restore_signals, start_new_session)
  File "D:\programfiles\Anaconda3\lib\subprocess.py", line 1155, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] 系统找不到指定的文件。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/code/commany/python/APPScan/main.py", line 7, in <module>
    browser = webdriver.Chrome()
  File "D:\programfiles\Anaconda3\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 73, in __init__
    self.service.start()
  File "D:\programfiles\Anaconda3\lib\site-packages\selenium\webdriver\common\service.py", line 83, in start
    os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

Process finished with exit code 1

没有安装chromedriver导致的,参考自己chrome浏览版本对应的chromedriver版本:
https://my.oschina.net/u/3367404/blog/3011400

chromedriver下载地址:
https://chromedriver.storage.googleapis.com/index.html

下载完成后,将ChromeDriver的可执行文件配置到环境变量下。

如果使用Windows,建议直接将chromedriver.exe文件拖到Python的Scripts目录下。

再次运行脚本,发现会新弹出一个新chrome:

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转载自www.cnblogs.com/mysticbinary/p/11687618.html