【Python】Pycharm 中启动 Selenium 中的常见报错

一、selenium启动浏览器报错os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.Web

今天发现用selenium启动firefox浏览器报错，发现原因是没有安装驱动，所以把这个问题记录下来

selenium启动firefox报错

from selenium import webdriver

driver = webdriver.Firefox()
driver.get("https://www.google.com/")

报错代码如下：

Traceback (most recent call last):
File "D:\Program Files\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start
stdout=self.log_file, stderr=self.log_file)
File "D:\Program Files\Python35\lib\subprocess.py", line 947, in __init__
restore_signals, start_new_session)
File "D:\Program Files\Python35\lib\subprocess.py", line 1224, 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 "C:\Users\Administrator\Desktop\count.py", line 3, in <module>
driver = webdriver.Firefox()
File "D:\Program Files\Python35\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 145, in __init__
self.service.start()
File "D:\Program Files\Python35\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.

最后找到了解决办法如下：

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,如图：

C:\Program Files\Mozilla Firefox；

2、再把geckodriver.exe这个文件添加到你安装的python文件夹里面，比如我的：

3、重启cmd或IDLE再次运行代码即可

二、raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: permission denied

比如：

driver = webdriver.Firefox()
driver.get("http://www.baidu.com")
print(driver.title)
time.sleep(3)
driver.find_element_by_id("kw").send_keys(u"ISEOer")

这段代码一般都会报错，这是因为http://www.baidu.com网址的安全性问题，加个https就好，改为https://www.baidu.com