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python-3.x - 如何在 xpath 中动态添加类名？

问题描述

我想动态添加类名。

我正在使用带有 Selenium 的 Python 3 来抓取...

new = "dt du dv bs dw dx dy dz aw ea ag b ah ai eb ak ec ed j dl ee az "
browser.find_element_by_xpath(".//button[@class='"+new+"']).click()

结果：它应该导航到网络并单击按钮

error:
    browser.find_element_by_xpath(".//button[@class='"+new+"']").click()
  File "/home/venky/.local/lib/python3.5/site-packages/selenium/webdriver/remote/webdriver.py", line 394, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/home/venky/.local/lib/python3.5/site-packages/selenium/webdriver/remote/webdriver.py", line 978, in find_element
    'value': value})['value']
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":".//button[@class='dt du dv bs dw dx dy dz aw ea ag b ah ai eb ak ec ed j dl ee az ']"}
  (Session info: chrome=73.0.3683.103)
  (Driver info: chromedriver=73.0.3683.68 (47787ec04b6e38e22703e856e101e840b65afe72),platform=Linux 4.10.0-28-generic x86_64)

标签： python-3.x

解决方案

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