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python - 程序在调试模式下运行正常，但正常运行会报错

问题描述

这是我当前的代码，但每当我运行它时，最后一行都会出现错误

stale element reference: element is not attached to the page document

from selenium import webdriver

url = "https://otctransparency.finra.org/otctransparency/OtcDownload"
driver.get(url)
driver.maximize_window()
driver.implicitly_wait(5)

agree = driver.find_elements_by_xpath("//button[@class='btn btn-warning']")[0]
agree.click()
nonats = driver.find_element_by_link_text('OTC (Non-ATS) Download')
nonats.click()

driver.find_element_by_xpath("//img[@src='./assets/icon_download.png']").click()
driver.switch_to.window(driver.window_handles[0])

driver.find_element_by_xpath("(//div[@class='checkbox-inline'])[2]").click()
driver.find_element_by_xpath("(//div[@class='checkbox-inline'])[1]").click()

driver.implicitly_wait(5)
button = driver.find_element_by_xpath("//img[@src='./assets/icon_download.png']")
print(button.is_displayed())
button.click()

当我在调试模式下逐行运行代码时，一切正常，没有任何错误。任何帮助都会很棒。

编辑：这是我的堆栈跟踪

Traceback (most recent call last):
 File "C:\Users\derpe\Desktop\python projects personal\testing finra\untitled1.py", line 31, in <module>
    button.click()

  File "C:\Users\derpe\anaconda3\lib\site-packages\selenium\webdriver\remote\webelement.py", line 80, in click
    self._execute(Command.CLICK_ELEMENT)

  File "C:\Users\derpe\anaconda3\lib\site-packages\selenium\webdriver\remote\webelement.py", line 633, in _execute
    return self._parent.execute(command, params)

  File "C:\Users\derpe\anaconda3\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)

  File "C:\Users\derpe\anaconda3\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)

StaleElementReferenceException: stale element reference: element is not attached to the page document
  (Session info: chrome=86.0.4240.75)

标签： pythonselenium

解决方案

在您搜索下载链接时，单击复选框会触发页面刷新。

调用sleep以允许刷新完成。

driver.implicitly_wait(5)
import time   # add this 
time.sleep(1)   # add this
button = driver.find_element_by_xpath("//img[@src='./assets/icon_download.png']")
print(button.is_displayed())
button.click()

我尝试了其他硒等待，但它们对我不起作用。可能是因为在刷新开始之前元素搜索成功，但仍然点击迟到。

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