Python3+selenium配置常见报错解决方案

第一个坑：'geckodriver' executable needs to be in path

1.如果启动浏览器过程中报如下错误

traceback (most recent call last):
file "<stdin>", line 1, in <module>
file "d:\test\python3\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 145, in __init__
self.service.start()
file "d:\test\python3\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.

2.这个是因为最新的selenium3.0启动firefox需要geckodriver.exe这个驱动文件。

3.下载之后，配置到环境变量path下（可以直接放python根目录）

第二坑：expected browser binary location, but unable to find binary in default location

1.如果启动浏览器过程中报如下错误：

traceback (most recent call last):
file "<stdin>", line 1, in <module>
file "d:\test\python3\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 155, in __init__
keep_alive=true)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 92, in __init__
self.start_session(desired_capabilities, browser_profile)

file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 179, in start_session
response = self.execute(command.new_session, capabilities)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 238, in execute
self.error_handler.check_response(response)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 193, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.webdriverexception: message: expected browser binary location, but unable to find binary in default location,
no 'moz:firefoxoptions.binary' capability provided, and no binary flag set on the command line.

2.这个是因为firefox.exe这个文件也需要配置到环境变量path下。

3.这个路径就是安装完firefox后，找到firefox.exe这个文件的地址，加到path下。

第三坑：unsupported marionette protocol version 2, required 3

1.如果启动浏览器过程中出现如下错误

traceback (most recent call last):
file "<stdin>", line 1, in <module>

file "d:\test\python3\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 155, in __init__
keep_alive=true)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 92, in __init__
self.start_session(desired_capabilities, browser_profile)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 179, in start_session
response = self.execute(command.new_session, capabilities)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 238, in execute
self.error_handler.check_response(response)
file "d:\test\python3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 193, in check_response

raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.webdriverexception: message: unsupported marionette protocol version 2, required 3

2.这个错误原因是firefox版本过低了，最新的selenium3.0版本支持firefox47以上的版本，升级版本就可以了

第四坑：webdriverexception: message: newsession

1.traceback (most recent call last):

file “d:\test\python3\lib\site-packages\selenium\webdriver\firefox\\webdriver.py”, line 170, in init
keep_alive=true)
file “d:\test\python3\lib\site-packages\selenium\webdriver\firefox\\webdriver.py”, line 156, in init
self.start_session(capabilities, browser_profile)
file “d:\test\python3\lib\site-packages\selenium\webdriver\firefox\\webdriver.py”, line 245, in start_session
response = self.execute(command.new_session, parameters)
file “d:\test\python3\lib\site-packages\selenium\webdriver\firefox\\webdriver.py”, line 314, in execute
self.error_handler.check_response(response)
file “d:\test\python3\lib\site-packages\selenium\webdriver\firefox\\errorhandler.py”, line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.webdriverexception: message: newsession

2.下载最新的geckodriver.exe 然后把它放到python的安装目录下

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。