selenium.common.exceptions.TimeoutException：当我尝试使用python进行按钮单击时，将出现此错误

Question

我正在使用Selenium软件包来单击某个网站的按钮。当我尝试时出现以下错误：

selenium.common.exceptions.TimeoutException: Message:

这是尝试运行的代码。

import time 
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC 
from bs4 import BeautifulSoup as BSoup
from datetime import date, timedelta
import pyodbc 
import datetime

browser =  webdriver.Firefox()
browser.get("https://www.cbsl.gov.lk/rates-and-indicators/exchange-rates/daily-buy-and-sell-exchange-rates")
#time.sleep(10)

#browser.find_element_by_xpath('//*[@id="dailyexchange"]/div[2]/div/button[1]').click()

wait = WebDriverWait(browser, 20)
element = wait.until(EC.element_to_be_clickable((By.XPATH, '//*[@id="dailyexchange"]/div[2]/div/button[1]')))
element.click()

Answer 1

在点击按钮之前，您需要切换到iframe：

browser.get("https://www.cbsl.gov.lk/rates-and-indicators/exchange-rates/daily-buy-and-sell-exchange-rates")
wait = WebDriverWait(browser, 20)
wait.until(EC.frame_to_be_available_and_switch_to_it('iFrameResizer2'))
element = wait.until(EC.element_to_be_clickable((By.NAME, 'select_button')))
element.location_once_scrolled_into_view
element.click()

Answer 2

所需元素位于<iframe>中，因此您必须：

• 诱导 WebDriverWait 以使所需的框架可用并切换到它。
• 诱导 WebDriverWait 以使所需的元素可点击。

• 您可以使用以下任一解决方案：

  • 使用CSS_SELECTOR：

    from selenium import webdriver
    from selenium.webdriver.chrome.options import Options
    from selenium.webdriver.common.by import By
    from selenium.webdriver.support.ui import WebDriverWait
    from selenium.webdriver.support import expected_conditions as EC
    
    options = Options()
    options.add_argument("start-maximized")
    browser = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
    browser.get("https://www.cbsl.gov.lk/rates-and-indicators/exchange-rates/daily-buy-and-sell-exchange-rates")
    WebDriverWait(browser, 20).until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR,"iframe#iFrameResizer2[src='/cbsl_custom/exratestt/exratestt.php']")))
    WebDriverWait(browser, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button.btn.btn-default[name='select_button']"))).click()
    

  • 浏览器快照：