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【文末送書】Python實作評論區抽獎功能

2021-12-18 07:49:05 其他

「作者主頁」：士別三日wyx

評論區抽獎功能

  • 1. 分析評論介面
  • 2. 獲取評論資料
  • 3. 篩選評論用戶
  • 4. 抽取幸運觀眾
  • 5. 抽獎送書
    • 5.1 獎勵介紹
    • 5.2 抽獎規則

1. 分析評論介面

首先，我們需要找到評論資料的「介面」，也就是獲取評論資料的請求，

打開一個需要抽獎的文章，進入「開發者模式」（按F12 或 右鍵檢查），選中 Network 選項

在這里插入圖片描述
「重繪」文章頁面，右側工具列中觀察頁面發送的請求，逐個分析請求，根據回應內容判斷出獲取評論的請求

在這里插入圖片描述
這條請求的回應內容中就包含了我們的評論，由此判斷，這條請求就是我們獲取評論資訊的請求了，

在這里插入圖片描述
在 Headers 欄中可以查看完整「請求」

https://blog.csdn.net/phoenix/web/v1/comment/list/121888905?page=1&size=3&commentId=

在這里插入圖片描述

2. 獲取評論資料

有了介面以后，我們使用 requests 模塊發送請求，獲取評論的資料

注意請求中的兩個引數： page 和 size

  1. page 表示第幾頁，此處傳 1 即可
  2. size 表示每頁顯示幾條資料，此處傳 100 （有幾條評論就寫幾）
import requests

# 評論請求連接
url = 'https://blog.csdn.net/phoenix/web/v1/comment/list/121888905?page=1&size=100&commentId='
# 請求頭
header = {
        "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36"
    }

# 獲取評論的請求資料（json字串）
page = requests.get(url, headers=header)
print(page.text)

輸出結果如下

E:\data\PrCharm\pythonProject\venv\Scripts\python.exe E:/data/PrCharm/pythonProject/atk.py
{"code":200,"message":"success","data":{"count":29,"pageCount":1,"floorCount":17,"list":[{"info":{"commentId":19437175,"articleId":121888905,"parentId":0,"postTime":"2021-12-16 18:05:48","content":"優質好文，期待回訪[face]emoji:015.png[/face]","userName":"qq_53673551","digg":1,"diggArr":[],"parentUserName":"wangyuxiang946","parentNickName":"士別三日wyx","avatar":"https://profile.csdnimg.cn/0/8/A/3_qq_53673551","nickName":"知心寶貝","dateFormat":"22 小時前","years":1,"vip":false,"vipIcon":"","companyBlog":false,"companyBlogIcon":"","flag":false,"flagIcon":"","levelIcon":"https://csdnimg.cn/identity/blog4.png","commentFromTypeResult":{"index":4,"key":"android","title":"CSDN APP Android"},"isTop":false,"isBlack":false},"sub":[],"pointCommentId":null},{"info":{"commentId":19396007,"articleId":121888905,"parentId":0,"postTime":"2021-12-14 11:35:03","content":"厲害","userName":"qq_43585922","digg":1,"diggArr":[],"parentUserName":"wangyuxiang946","parentNickName":"士別三日wyx","avatar":"https://profile.csdnimg.cn/A/E/7/3_qq_43585922","nickName":"奔走的王木木Sir","dateFormat":"3 天前","years":3,"vip":false,"vipIcon":"","companyBlog":false,"companyBlogIcon":"","flag":false,"flagIcon":"","levelIcon":"https://csdnimg.cn/identity/blog5.png","commentFromTypeResult":{"index":1,"key":"pc","title":"PC"},"isTop":false,"isBlack":false},"sub":[{"commentId":19396789,"articleId":121888905,"parentId":19396007,"postTime":"2021-12-14 12:23:10","content":"謝謝支持[face]emoji:028.png[/face]","userName":"wangyuxiang946","digg":1,"diggArr":[],"parentUserName":"qq_43585922","parentNickName":"奔走的王木木Sir","avatar":"https://profile.csdnimg.cn/9/7/F/3_wangyuxiang946","nickName":"士別三日wyx","dateFormat":"3 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Android"},"isTop":false,"isBlack":false},"sub":[],"pointCommentId":null},{"info":{"commentId":19395060,"articleId":121888905,"parentId":0,"postTime":"2021-12-14 10:59:58","content":"很精辟的文章，8421碼可以","userName":"weixin_42601136","digg":0,"diggArr":[],"parentUserName":"wangyuxiang946","parentNickName":"士別三日wyx","avatar":"https://profile.csdnimg.cn/4/9/5/3_weixin_42601136","nickName":"Willing 卡卡","dateFormat":"3 天前","years":3,"vip":false,"vipIcon":"","companyBlog":false,"companyBlogIcon":"","flag":false,"flagIcon":"","levelIcon":"https://csdnimg.cn/identity/blog5.png","commentFromTypeResult":{"index":1,"key":"pc","title":"PC"},"isTop":false,"isBlack":false},"sub":[],"pointCommentId":null}]}}

Process finished with exit code 0

3. 篩選評論用戶

nickName 欄位保存評論用戶名稱，我們將獲取到的資料根據 ，分隔成陣列，再篩選出包含 nickName 的資料，即可獲取所有評論用戶的名稱

import requests

# 評論請求連接
url = 'https://blog.csdn.net/phoenix/web/v1/comment/list/121888905?page=1&size=100&commentId='
# 請求頭
header = {
        "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36"
    }

# 獲取評論的請求資料（json字串）
page = requests.get(url, headers=header)
titles = page.text.split(',')  # 獲取每一個欄位
names = []  # 存放評論者名稱的陣列
for t in titles:
    # 獲取所有評論者欄位
    if 'nickName' in t and '"nickName":"士別三日wyx"' not in t:
        name = t[12:len(t)-1]  # 截取評論者名稱
        names.append(name)  # 添加評論者名稱至陣列
print(names)

輸出結果如下

E:\data\PrCharm\pythonProject\venv\Scripts\python.exe E:/data/PrCharm/pythonProject/atk.py
['知心寶貝', '奔走的王木木Sir', 'Dark And Grey', 'Willing 卡卡', '冷環淵', 'IT學習日記', '喬木先生i', 'JAVA 小白   童心', 'FlyLolo', 'JAVA 小白   童心', '小輝_Super', 'Faith_xzc', '撥云見日yab', '可口也可樂、', '百思不得小趙', 'Willing 卡卡']

Process finished with exit code 0

4. 抽取幸運觀眾

使用 random 函式生成亂數，范圍是評論用戶陣列的長度-1，生成的亂數作為陣列的索引，索引對應的用戶名稱即為幸運觀眾，

import requests
import random

# 評論請求連接
url = 'https://blog.csdn.net/phoenix/web/v1/comment/list/121888905?page=1&size=100&commentId='
# 請求頭
header = {
        "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36"
    }

# 獲取評論的請求資料（json字串）
page = requests.get(url, headers=header)
titles = page.text.split(',')  # 獲取每一個欄位
names = []  # 存放評論者名稱的陣列
for t in titles:
    # 獲取所有評論者欄位
    if 'nickName' in t and '"nickName":"士別三日wyx"' not in t:
        name = t[12:len(t)-1]  # 截取評論者名稱
        names.append(name)  # 添加評論者名稱至陣列

# 生成亂數作為陣列索引（亂數范圍是評論者的數量）
star = random.randint(0, len(names)-1)
print('參與抽獎人數： %d' % len(names))
print('幸運觀眾：%s' % names[star])  # 產生幸運兒

執行結果如下

E:\data\PrCharm\pythonProject\venv\Scripts\python.exe E:/data/PrCharm/pythonProject/atk.py
參與抽獎人數： 16
幸運觀眾：Willing 卡卡

Process finished with exit code 0


E:\data\PrCharm\pythonProject\venv\Scripts\python.exe E:/data/PrCharm/pythonProject/atk.py
參與抽獎人數： 16
幸運觀眾：IT學習日記

Process finished with exit code 0

5. 抽獎送書

從評論區中抽取一名幸運觀眾贈送（包郵）《人工智能數學基礎與Python機器學習實戰》一本

5.1 獎勵介紹

書中網羅監督學習回歸、監督學習分類、無監督學習、半監督學習等機器學習bibei演算法，不局限于Python中的sklearn的學習，緊跟大資料時代的發展，是初學者非常期待的入門書，有很多的示例可以幫助初學者快速上手，

在這里插入圖片描述
詳細資訊可參考官方連接

官方連接售價
京東https://item.jd.com/13504186.html￥61
當當http://product.dangdang.com/29323972.html￥70

5.2 抽獎規則

  1. 此文章下方評論留言即可參與抽獎
  2. 活動時間：自文章發布日起，7天內
  3. 抽獎方式：此文章下方評論留言中隨機抽取一名幸運觀眾
  4. 通知方式：博主通過CSDN私信中獎觀眾，提供識訓地址

提示：

  1. 本次抽獎不對參與人去重，可多次評論，評論越多中獎概率越高
  2. 單用戶每天（自然日）最多發表55條評論；
  3. 單用戶2個自然日內（時間視窗）評論量超過100條，將被禁言48小時 ；
  4. 單用戶，每分鐘評論最多3條；

感謝你的點贊、評論、收藏，我是三日，祝你中獎，

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