根据上面的答案,我有以下代码:
from selenium.webdriver.support.ui import WebDriverWait as wait
from selenium import webdriver
chrome_path = r"C:\scrape\chromedriver.exe"
driver = webdriver.Chrome(chrome_path)
driver.get("https://website.com/")
# Get current divs
messages = driver.find_elements_by_class_name('div_i_am_targeting')
# Print all messages
for message in messages:
print(message.text)
while True:
try:
# Wait up to minute for new message to appear
wait(driver, 60).until(lambda driver: driver.find_elements_by_class_name('div_i_am_targeting') != messages)
# Print new message
for message in [m.text for m in driver.find_elements_by_class_name('div_i_am_targeting') if m not in messages]:
print(message)
# Update list of messages
messages = driver.find_elements_by_class_name('div_i_am_targeting')
except:
# Break the loop in case no new messages after minute passed
print('No new messages')
break
效果很好,可以捕获页面上出现的所有与 div_i_am_targeting
指定的类匹配的 div
此 HTML 页面上的 div 是动态生成的,大约每秒出现一个 div。
页面的实际结构是这样的:
<div class="div_i_am_targeting">
...
...
</div>
<div class="div_i_am_targeting">
...
...
</div>
<div class="div_i_am_targeting">
...
...
</div>
<div class="some_other_div">
...
...
</div>
<div class="div_i_am_targeting">
...
...
</div>
<div class="yet_another_div">
...
...
</div>
<div class="div_i_am_targeting">
...
...
</div>
这样,在动态创建的内容中,我当前定位的 div 之间就会出现其他 div。
页面上 div 的频率是可变的。
我在这里找不到任何相关问题,也找不到文档中的示例。
如何修改上面的代码,以便它抓取多个 div 的值,例如如果我想抓取上面示例中 div_i_am_targeting
和 some_other_div
的所有实例?
最佳答案
您可以尝试更换
driver.find_elements_by_class_name('div_i_am_targeting')
与
driver.find_elements_by_css_selector('.div_i_am_targeting, .some_other_div')
在你的脚本中匹配两个 div
关于python - 如何在 Python 中使用 Selenium 动态生成多个 div,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53621759/