1、啟動不了瀏覽器，報錯如下：

============================= ERRORS =============================
Traceback (most recent call last):
File "D:\python_files\eclipse_wrokstation\WinshareWebAotuTest\TestCase\testBookComments.py", line 16, in setUp
self.driver = webdriver.Chrome()
File "D:\Program Files\Python\Python3\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 75, in __init__
desired_capabilities=desired_capabilities)
File "D:\Program Files\Python\Python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 154, in __init__
self.start_session(desired_capabilities, browser_profile)
File "D:\Program Files\Python\Python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 243, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "D:\Program Files\Python\Python3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 312, in execute
self.error_handler.check_response(response)
File "D:\Program Files\Python\Python3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: unrecognized Blink revision: a10b9cedb40738cb152f8148ddab4891df876959
(Driver info: chromedriver=2.10.267521,platform=Windows NT 6.3 x86_64)

解決方式：

webdriver初始化的時候，指定一下瀏覽器的所在路徑

在聲明webdriver的時候加一句，再運行就可以了：

path = "C:\Program Files (x86)\Google\Chrome\Application\chromedriver.exe"

self.driver = webdriver.Chrome(executable_path=path)

2、根據定位找不到元素：

（1）可能情況一：因為當前瀏覽器的窗口切換了（新跳轉了窗口）。

解決方法：在定位之前，先切換一下窗口

handles = driver.window_handles # 所有窗口
print ‘*‘*20,handles
for handle in handles:
if handle!=driver.current_window_handle:
print ‘switch to ‘,handle
driver.switch_to_window(handle)
print driver.current_window_handle # 打印窗口句柄 --名稱
break

（2）可能情況二：因為當前定位的iframe變了。

解決方法：在定位之前，先切換一下frame

driver.switch_to_frame("rightFrame")

（3）可能情況三：運行太快，頁面還未完全加載。

解決方法：在定位之前，先休眠1秒（或者多秒）

time.sleep(1)

python+selenium常見問題解決方式