Selenium webdriver 有时找不到元素

Question

我试图在 tripadvisor 上找到搜索框，但有时找不到。（我收到超时错误）。我添加了 WebDriverWait 和 time.sleep 但没有效果。我仍在测试中，因此下面我的代码中有一部分需要人工干预。

编辑：更改为 time.sleep(10) 而不是 5 秒会有所帮助。但这使得代码非常慢。希望改用 WebDriverWait...

searchbox = WebDriverWait(driver,20).until(EC.presence_of_element_located((By.XPATH, "//input[@placeholder='Where to?']")))

下面是我的完整代码，我必须为每个国家多次找到搜索框。

from selenium.webdriver.common.by import By

from selenium import webdriver 

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

import time

driver = webdriver.Chrome(executable_path=r'C:\\Users\\user\\Downloads\\chromedriver.exe') 

driver.get("https://www.tripadvisor.com.sg/Hotels-g293951-Malaysia-Hotels.html")

此处人工干预：点击随机入住日期、退房日期，然后点击“更新”

countries3 = ["France","Qatar","Brunei Darussalam","Hong Kong"]

countries4 = ["Germany","The Netherlands","Nigeria","South Africa","Russia"]

countries2 = ["New York","Saudi Arabia","Sri Lanka","Switzerland","Turkey"]

countries1 = ["United Arab Emirates","New Zealand","Thailand","India"]

countries5 = ["Vietnam","Australia","Malaysia","Cambodia","Indonesia","Laos","Myanmar","Philippines","Thailand","Vietnam","Australia",             "Canada","China","Japan","Taiwan","United Kingdom","United States","Bangladesh","Belgium","Egypt","Finland"]

countries = countries1+countries2+countries3+countries4+countries5

for country in countries: 

    driver.get(URL)

    driver.implicitly_wait(10)

    time.sleep(5)

    searchbox = WebDriverWait(driver,20).until(EC.presence_of_element_located((By.XPATH, "//input[@placeholder='Where to?']")))

    searchbox.send_keys(country) #select your destination here 

    time.sleep(2)

    possible = driver.find_elements_by_class_name("_3a_rGDNB")

    for i in possible:

        if i.text == country:

            i.click()

            break

            

    time.sleep(5)

    hotels = WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.XPATH, '//*[@title="Hotels"]')))

    driver.execute_script("arguments[0].click();", hotels)

    time.sleep(3)

Answer 1

要在Tripadvisor上查找搜索框，presence_of_element_located()您必须诱导WebDriverWait ，并且element_to_be_clickable()您可以使用以下任一定位器策略：使用CSS_SELECTOR：searchbox = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "input[name='q'][title='Search']")))使用XPATH：searchbox = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//input[@name='q' and @title='Search']")))注意：您必须添加以下导入：from selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.common.by import Byfrom selenium.webdriver.support import expected_conditions as EC

Answer 2

search input在框中输入值使用WebDriverWait() 并等待element_to_be_clickable() 并跟随 xpath。searchbox = WebDriverWait(driver,20).until(EC.element_to_be_clickable((By.XPATH, "//input[@aria-label='Search']")))