使用 Beautiful Soup 抓取一个人在 Quora 上回答的所有问题

Question

我如何编写漂亮的汤来抓取特定用户已回答的所有问题？

输入：
作者网址
例如：https://www.quora.com/profile/AUTHOR/answers)

输出：
第 1 列：作者已回答的问题
示例：“Lorem Ipsum 问题”

第 2 列：已回答问题的 URL
示例：https://www.quora.com/lorem-ipsum-question

第 3 列：已回答问题的 URL
示例：https://www.quora.com/lorem-ipsum-question

Answer 1

此脚本将打印页面上找到的所有答案/网址。还有无限滚动向https://www.quora.com/graphql/gql_para_POST?q=UserProfileAnswersMostRecent_RecentAnswers_Query 发出 POST 请求，但我无法从中获取数据（您可以在开发者工具 -> 网络选项卡中看到它）：

import re
import json
import requests


url = 'https://www.quora.com/profile/Nana-Bello-Shehu/answers'
html_data = requests.get(url).text

d = re.findall(r'window\.ansFrontendGlobals\.data\.inlineQueryResults\.results\[".*?"\] = ("{.*}");', html_data)[-1]
d = json.loads(json.loads(d));

for e in d['data']['user']['recentPublicAndPinnedAnswersConnection']['edges']:
    if e['node']['__typename'] != 'Answer':
        continue

    q = json.loads(e['node']['question']['title'])
    title = q['sections'][0]['spans'][0]['text']
    u = 'https://www.quora.com' + e['node']['question']['url']
    print('{:<90} {}'.format(title, u))

打印：

Do pictures speak louder than words?                                                       https://www.quora.com/Do-pictures-speak-louder-than-words
Does true love exist?                                                                      https://www.quora.com/Does-true-love-exist-8
What picture made your blood boil?                                                         https://www.quora.com/What-picture-made-your-blood-boil
What are the before and after pics of people who are drug addicts for several years?       https://www.quora.com/What-are-the-before-and-after-pics-of-people-who-are-drug-addicts-for-several-years
What was the funniest thing you saw/heard today?                                           https://www.quora.com/What-was-the-funniest-thing-you-saw-heard-today
Are there any truly selfless acts, motives, or people?                                     https://www.quora.com/Are-there-any-truly-selfless-acts-motives-or-people
Which famous person in history who is idolized, was actually a horrible person?            https://www.quora.com/Which-famous-person-in-history-who-is-idolized-was-actually-a-horrible-person
What is something that you read recently and is worth sharing?                             https://www.quora.com/What-is-something-that-you-read-recently-and-is-worth-sharing
How do I get the attention of my crush?                                                    https://www.quora.com/How-do-I-get-the-attention-of-my-crush
What are some heart touching stories of best friends?                                      https://www.quora.com/What-are-some-heart-touching-stories-of-best-friends

Answer 2

我认为最简单的方法是使用 selenium：

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = webdriver.Firefox(executable_path='c:/program/geckodriver.exe')
import time
url = 'https://www.quora.com/profile/Nana-Bello-Shehu/answers'

driver.get(url)

SCROLL_TIME = 2


last_height = driver.execute_script("return document.body.scrollHeight")

while True:

    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")


    time.sleep(SCROLL_TIME)


    new_height = driver.execute_script("return document.body.scrollHeight")
    if new_height == last_height:
        break
    last_height = new_height

qbox = driver.find_elements_by_css_selector('.qu-pb--medium')
for qb in qbox:
    print(qb.find_element_by_css_selector('span.qu-userSelect--text').text)
    print('https://www.quora.com' + qb.find_element_by_css_selector('a.q-box.qu-cursor--pointer.qu-hover--textDecoration--underline').get_attribute('href'))
    print('\n')

输出：

Do pictures speak louder than words?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu


Does true love exist?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu


What picture made your blood boil?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu


What are the before and after pics of people who are drug addicts for several years?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu


What was the funniest thing you saw/heard today?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu


Are there any truly selfless acts, motives, or people?
https://www.quora.comhttps://www.quora.com/profile/Nana-Bello-Shehu

等等……

此脚本滚动到页面末尾并复制所有问题。您可以尝试设置较低的 SCROLL_TIME 以使脚本更快，但有时脚本会在页面结束之前结束，滚动时间更短。

注意：

1. 你需要selenium
2. 你需要火狐
3. 您需要 geckodriver，现在脚本从 c:/program/geckodriver.exe 导入它，因此如果您将 geckodriver 添加到其他路径，您需要更改 executable_path