我有一个from selenium import webdriver
温度网络刮板,是使用Python在weather.com上工作的。页面开始处的刮板几乎立即找到正确的高温和低温。但是,到页面末尾,它变得越来越慢(到末尾需要7秒)。这可能是因为抓取工具必须通过更多的HTML才能找到正确的数据(?)。这是代码的主要部分:
high = driver.find_element_by_css_selector('#twc-scrollabe > table > tbody > tr:nth-child(' + str(j) + ') > td.temp > div > span:nth-child(1)').text
low = driver.find_element_by_css_selector('#twc-scrollabe > table > tbody > tr:nth-child(' + str(j) + ') > td.temp > div > span:nth-child(3)').text
date = driver.find_element_by_css_selector('#twc-scrollabe > table > tbody > tr:nth-child(' + str(j) + ') > td:nth-child(2) > div > span').text
#auth > div > div > div > div > div > form > button
#twc-scrollabe > table > tbody > tr:nth-child(1) > td:nth-child(2) > div > span
#twc-scrollabe > table > tbody > tr:nth-child(2) > td:nth-child(2) > div > span
对此有简单(或复杂)的解决方法吗?而且,如果您认为没有简单的解决方案,那也会有很大的帮助(可能是这种情况?)
答案 0 :(得分:1)
您要查找的内容是否由JavaScript生成?如果只有HTML,则可以避免使用无头浏览器,并使用<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<div id="num1">
</div>
<div id="num2">
<button onclick="hallo();">I position red div at bottom: 150px</button>
</div>
和requests
:
bs4
test.py
$ python test.py
Got response: 200
Today JUN 1 80°/61°
Sun JUN 2 70°/47°
Mon JUN 3 63°/45°
Tue JUN 4 74°/57°
Wed JUN 5 75°/64°
Thu JUN 6 77°/63°
Fri JUN 7 77°/64°
Sat JUN 8 81°/66°
Sun JUN 9 81°/65°
Mon JUN 10 80°/63°
Tue JUN 11 80°/63°
Wed JUN 12 81°/62°
Thu JUN 13 80°/63°
Fri JUN 14 81°/63°
Sat JUN 15 81°/63°
Total: 0.66s, request: 0.60s