硒如何通过包含字符串的 src 查找图像

Question

我在页面上找不到带有硒的图像。我的脚本是用python编写的。

try:
is_captcha = driver.find_element_by_css_selector("img[src*='validation']")
if is_captcha:
print("CAPTCHA FOUND!")
except:
try:
is_captcha = driver.find_element_by_css_selector("[src*='validation']")
if is_captcha:
print("CAPTCHA FOUND!")
except:
print ("No catpcha form for {}".format(link_hyip))

我的图像所在的 HTML 代码：

<td class="menutxt"><img src="?a=show_validation_image&amp;PHPSESSID=u020264onvkgu0fsl9b94lk1v1&amp;rand=1901750303"></td>

我收到此错误：

no such element: Unable to locate element: {"method":"css selector","selector":"[src*='validation']"}
(Session info: chrome=76.0.3809.132)

谢谢你的帮助！

Answer 1

使用WebdriverWait和visibility_of_element_located以及下面的 xpath。

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
driver = webdriver.Chrome()
driver.get('https://www.lanysoft.biz/?a=support')
try:
is_captcha =WebDriverWait(driver,10).until(EC.visibility_of_element_located((By.XPATH,"//form[@name='loginform']//img[contains(@src,'show_validation')]"))) 
if is_captcha:
print("CAPTCHA FOUND!")
except:
print('recapcha not found')