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python3.6.1+selenium3.0环境安装问题及解决方法

脚本:(打开火狐浏览器,进入百度网页,搜索selenium)

from selenium import webdriverbrowser = webdriver.Firefox();browser.get("http://www.baidu.com");browser.find_element_by_id("kw").send_keys("selenium");browser.find_element_by_id("su").click();browser.quit();

执行脚本报错1:

Traceback (most recent call last):  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start    stdout=self.log_file, stderr=self.log_file)  File "D:\2017\programming language\python\installPath\lib\subprocess.py", line 707, in __init__    restore_signals, start_new_session)  File "D:\2017\programming language\python\installPath\lib\subprocess.py", line 990, 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:\2017\programming language\python\installPath\Scripts\baidu.py", line 3, in <module>    browser = webdriver.Firefox();  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 142, in __init__    self.service.start()  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\common\service.py", line 81, in start    os.path.basename(self.path), self.start_error_message)selenium.common.exceptions.WebDriverException: Message: geckodriver executable needs to be in PATH. 
 这里提到geckodriver驱动,selenium3.x中,firefox浏览器驱动独立,需要单独安装;
解决方法:下载geckodriver驱动,将其放入python安装路径中,确保path中已添加该路径;

再次执行脚本,报错2:
Traceback (most recent call last):  File "D:\2017\programming language\python\installPath\Scripts\baidu.py", line 3, in <module>    browser = webdriver.Firefox();  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 152, in __init__    keep_alive=True)  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 98, in __init__    self.start_session(desired_capabilities, browser_profile)  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 188, in start_session    response = self.execute(Command.NEW_SESSION, parameters)  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 256, in execute    self.error_handler.check_response(response)  File "D:\2017\programming language\python\installPath\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response    raise exception_class(message, screen, stacktrace)selenium.common.exceptions.WebDriverException: Message: Unable to find a matching set of capabilities

解决方法:

1. 检查本机java版本,selenium3.x只支持java8版本以上,这里符合要求;

2. geckodriver版本是v0.16.1 ,firefox浏览器版本是45,卸载firefox,安装最新版本的firefox版本53;

运行脚本,可以正常执行。

 

python3.6.1+selenium3.0环境安装问题及解决方法