python FileNotFoundError: [WinError 2] 系统找不到指定的文件。

 

 

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Traceback (most recent call last):   File "C:\_____Soft______\python3.6\lib\site-packages\selenium\webdriver\common \service.py", line 76, in start     stdin=PIPE)   File "C:\_____Soft______\python3.6\lib\subprocess.py", line 709, in __init__     restore_signals, start_new_session)   File "C:\_____Soft______\python3.6\lib\subprocess.py", line 997, in _execute_c hild     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 "alimama.py", line 76, in <module>     sp = Spider()   File "alimama.py", line 11, in __init__     self.web = webdriver.Chrome()   File "C:\_____Soft______\python3.6\lib\site-packages\selenium\webdriver\chrome \webdriver.py", line 68, in __init__     self.service.start()   File "C:\_____Soft______\python3.6\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' executabl e needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chrome driver/home

 1、首先需要下载浏览器驱动
2、即便是firefox，在version>47时，也是需要安装firefox的浏览器驱动
3、浏览器驱动需要放在python安装目录
4、系统环境变量，path需要加入浏览器驱动地址

修改subprocess.py 文件

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def __init__(self, args, bufsize=-1, executable=None,              stdin=None, stdout=None, stderr=None,shell=true,  这里添加              preexec_fn=None, close_fds=_PLATFORM_DEFAULT_CLOSE_FDS,              shell=False, cwd=None, env=None, universal_newlines=False,              startupinfo=None, creationflags=0,              restore_signals=True, start_new_session=False,              pass_fds=(), *, encoding=None, errors=None):