使用 Beautiful Soup 抓取一個人在 Quora 上回答的所有問題

Question

我如何編寫漂亮的湯來抓取特定用戶已回答的所有問題？

輸入：
URL 作者
例如： https://www.quora.com/profile/AUTHOR/answers ）

Output：
第 1 列：作者已回答的問題
示例：“Lorem Ipsum 問題”

第2欄：已回答問題的URL
例如： https://www.quora.com/lorem-ipsum-question

第 3 列：已回答問題的 URL
例如： https://www.quora.com/lorem-ipsum-question

Answer 1

此腳本將打印頁面上找到的所有答案/url。 還有無限滾動向https://www.quora.com/graphql/gql_para_POST?q=UserProfileAnswersMostRecent_RecentAnswers_Query發出 POST 請求，但我無法從中獲取數據（您可以在開發人員工具 -> 網絡選項卡中看到它):

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))

印刷：

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

我認為最簡單的方法是使用 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')

Output：

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...

此腳本滾動到頁面末尾並復制所有問題。 您可以嘗試設置較低的SCROLL_TIME以使腳本更快，但有時腳本會在頁面結束之前以較短的滾動時間結束。

筆記：

1. 你需要selenium
2. 您需要 Firefox
3. 您需要geckodriver ，現在腳本從c:/program/geckodriver.exe導入它，因此如果將 geckodriver 添加到其他路徑，則需要更改executable_path