python - 在为类和 chrome gui 错误运行我的 selenium 代码时出现两个错误
问题描述
我想编写一个自动脚本来登录 Twitter,但它出现了 2 个错误......一个无法找到我提到的类,另一个是 chrome gui 错误。
from selenium import webdriver
driver = webdriver.Chrome(r"C:\Users\intel\Desktop\Downloads\abhay@\chromedriver_win32\chromedriver.exe")
driver.get("https://twitter.com/login")
login = driver.find_element_by_class_name("js-username-field email-input js-initial-focus").send_keys("hello")
passw = driver.find_element_by_class_name("js-password-field").send_keys("hello")
btn = driver.find_element_by_class_name("submit EdgeButton EdgeButton--primary EdgeButtom--medium").click()
我得到的错误是:
DevTools listening on ws://127.0.0.1:50766/devtools/browser/f3cecbe8-f7a2-431b-a8fe-67f5f52f2f62
[1105/173036.659:ERROR:command_buffer_proxy_impl.cc(124)] ContextResult::kTransientFailure: Failed to send GpuChannelMsg_CreateCommandBuffer.
Traceback (most recent call last):
File "C:\Users\intel\Desktop\Python\test.py", line 7, in <module>
login = driver.find_element_by_class_name("js-username-field email-input js-initial-focus").send_keys("hello")
File "C:\Users\intel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 564, in find_element_by_class_name
return self.find_element(by=By.CLASS_NAME, value=name)
File "C:\Users\intel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 978, in find_element
'value': value})['value']
File "C:\Users\intel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Users\intel\AppData\Local\Programs\Python\Python37-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException:
Message: no such element: Unable to locate element:
{"method":"css selector","selector":".js-username-field email-input js-
initial-focus"}
(Session info: chrome=78.0.3904.87)
解决方案
Selenium 将js-username-field email-input js-initial-focus
其视为具有一类的字符串,但它是具有三类的字符串。所以js-username-field
用作类名或使用其他函数来搜索元素。
您可以使用css_selector
点作为每个类的开始(并且没有空格)
driver.find_element_by_css_selector(".js-username-field.email-input.js-initial-focus")
driver.find_element_by_css_selector(".submit.EdgeButton.EdgeButton--primary.EdgeButtom--medium")
或使用xpath
(带空格)
driver.find_element_by_xpath('//*[@class="js-username-field email-input js-initial-focus"]')
driver.find_element_by_xpath('//*[@class="submit EdgeButton EdgeButton--primary EdgeButtom--medium"]')
from selenium import webdriver
driver = webdriver.Chrome(r"C:\Users\intel\Desktop\Downloads\abhay@\chromedriver_win32\chromedriver.exe")
driver.get("https://twitter.com/login")
login = driver.find_element_by_css_selector(".js-username-field.email-input.js-initial-focus").send_keys("hello")
#login = driver.find_element_by_xpath('//*[@class="js-username-field email-input js-initial-focus"]').send_keys("hello")
passw = driver.find_element_by_class_name("js-password-field").send_keys("hello")
btn = driver.find_element_by_css_selector(".submit.EdgeButton.EdgeButton--primary.EdgeButtom--medium").click()
#btn = driver.find_element_by_xpath('//*[@class="submit EdgeButton EdgeButton--primary EdgeButtom--medium"]').click()
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