爬取网站的步骤：
- 设定爬取目标
- 目标网站：我自己的博客，疯狂的蚂蚁 http://www.crazyant.net
- 目标数据：所有博客文章的 - 链接、标题、标签
- 分析目标网站
- 待爬取页面：http://www.crazyant.net/page/1 ~ http://www.crazyant.net/page/24
- 待爬取数据：HTML元素中的h2 class=entry-title下的超链接的标题和链接，标签列表
- 批量下载HTML
- 使用requests库实现下载，官网：https://2.python-requests.org//zh_CN/latest/user/quickstart.html
- 实现HTML解析，得到目标数据
- 使用BeautifulSoup库解析，官网：https://beautifulsoup.readthedocs.io/zh_CN/v4.4.0/
- 将结果数据存储
- 可以使用json.dumps把这个数据序列化存储
- 也可以将数据存入MySQL
import requests
from bs4 import BeautifulSoup
import pprint
import json
1、下载所有的页面的HTML
def download_all_htmls():
"""
下载所有列表页面的HTML，用于后续的分析
"""
htmls = []
for idx in range(24):
url = f"http://www.crazyant.net/page/{idx+1}"
print("craw html:", url)
r = requests.get(url)
if r.status_code != 200:
raise Exception("error")
htmls.append(r.text)
return htmls
# 执行爬取
htmls = download_all_htmls()
craw html: http://www.crazyant.net/page/1
craw html: http://www.crazyant.net/page/2
craw html: http://www.crazyant.net/page/3
craw html: http://www.crazyant.net/page/4
craw html: http://www.crazyant.net/page/5
craw html: http://www.crazyant.net/page/6
craw html: http://www.crazyant.net/page/7
craw html: http://www.crazyant.net/page/8
craw html: http://www.crazyant.net/page/9
craw html: http://www.crazyant.net/page/10
craw html: http://www.crazyant.net/page/11
craw html: http://www.crazyant.net/page/12
craw html: http://www.crazyant.net/page/13
craw html: http://www.crazyant.net/page/14
craw html: http://www.crazyant.net/page/15
craw html: http://www.crazyant.net/page/16
craw html: http://www.crazyant.net/page/17
craw html: http://www.crazyant.net/page/18
craw html: http://www.crazyant.net/page/19
craw html: http://www.crazyant.net/page/20
craw html: http://www.crazyant.net/page/21
craw html: http://www.crazyant.net/page/22
craw html: http://www.crazyant.net/page/23
craw html: http://www.crazyant.net/page/24
htmls[0]
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class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2469.html" rel="bookmark">Spark使用Java开发遇到的那些类型错误</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>Spark使用Java开发其实比较方便的，JAVA8的lambda表达式使得编写体验并不比Scala差很多，但是因为Spark本身使用Scala实现，导致使用Java开发的时候，也遇到不少的类型匹配问题。 本文列举出自己在工作开发中遇到的一些问题，供大家参考： WrappedArray和Vector 报错信息为：Caused by: java.lang.ClassCastException: sc … <a href="http://www.crazyant.net/2469.html" class="more-link">继续阅读<span class="screen-reader-text">Spark使用Java开发遇到的那些类型错误</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2469.html" rel="bookmark"><time class="entry-date published" datetime="2019-08-28T08:04:02+00:00">2019-08-28</time><time class="updated" datetime="2019-08-28T09:17:12+00:00">2019-08-28</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/java-development" rel="category tag">java</a>、<a href="http://www.crazyant.net/category/spark" rel="category tag">spark</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/java" rel="tag">java</a>、<a href="http://www.crazyant.net/tag/spark" rel="tag">spark</a></span><span class="comments-link"><a href="http://www.crazyant.net/2469.html#respond"><span class="screen-reader-text">于Spark使用Java开发遇到的那些类型错误</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2469 --><article class="post-2454 post type-post status-publish format-standard hentry category-pandas category-python category-203 tag-pandas tag-python tag-sklearn tag-204"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2454.html" rel="bookmark">推荐系统：实现文章相似推荐的简单实例</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>看了一篇文章实现了文章的内容相似度计算实现相似推荐，算法比较简单，非常适合我这种初学入门的人。 来自一篇英文文章：地址 文章标题为：How to build a content-based movie recommender system with Natural Language Processing 文章的代码在：地址 该文章实现相似推荐的步骤： 1、将CSV加载到pandas.pd 2、提取 … <a href="http://www.crazyant.net/2454.html" class="more-link">继续阅读<span class="screen-reader-text">推荐系统：实现文章相似推荐的简单实例</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2454.html" rel="bookmark"><time class="entry-date published" datetime="2019-08-25T12:13:46+00:00">2019-08-25</time><time class="updated" datetime="2019-08-25T13:05:07+00:00">2019-08-25</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" 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--><article class="post-2447 post type-post status-publish format-standard hentry category-java-development category-spark category-203 tag-item2vec tag-java tag-204"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2447.html" rel="bookmark">Spark使用word2vec训练item2vec实现内容相关推荐</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>之前使用spark als训练协同过滤，然后导出itemvectors做相似度计算，后来学到了可以用word2vec实现item2vec的训练效果貌似更好，试了一下果然不错； spark版本：2.3.1，开发语言为JAVA 几大步骤 读取查看、点击、播放等行为数据，我用的是播放数据； 数据整理成(userid, itemid, playcnt)的形式，这个数据可能是聚合N天得到的； 过滤掉play … <a href="http://www.crazyant.net/2447.html" class="more-link">继续阅读<span class="screen-reader-text">Spark使用word2vec训练item2vec实现内容相关推荐</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2447.html" rel="bookmark"><time class="entry-date published" datetime="2019-08-23T13:33:46+00:00">2019-08-23</time><time class="updated" datetime="2019-08-23T13:37:09+00:00">2019-08-23</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/java-development" rel="category tag">java</a>、<a href="http://www.crazyant.net/category/spark" rel="category tag">spark</a>、<a href="http://www.crazyant.net/category/%e6%8e%a8%e8%8d%90%e7%b3%bb%e7%bb%9f" rel="category tag">推荐系统</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/item2vec" rel="tag">item2vec</a>、<a href="http://www.crazyant.net/tag/java" rel="tag">java</a>、<a href="http://www.crazyant.net/tag/%e6%8e%a8%e8%8d%90%e7%b3%bb%e7%bb%9f" rel="tag">推荐系统</a></span><span 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class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2434.html" rel="bookmark"><time class="entry-date published" datetime="2019-08-20T00:11:12+00:00">2019-08-20</time><time class="updated" datetime="2019-08-20T00:15:11+00:00">2019-08-20</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/pandas" rel="category tag">pandas</a>、<a href="http://www.crazyant.net/category/python" rel="category tag">python</a>、<a href="http://www.crazyant.net/category/%e6%95%b0%e6%8d%ae%e9%a9%b1%e5%8a%a8" rel="category tag">数据驱动</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/pandas" rel="tag">pandas</a>、<a href="http://www.crazyant.net/tag/python" rel="tag">python</a></span><span class="comments-link"><a href="http://www.crazyant.net/2434.html#respond"><span class="screen-reader-text">于Pandas中对轴axis=0和axis=1的理解</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2434 --><article class="post-2419 post type-post status-publish format-standard hentry category-flask tag-echarts tag-flask tag-pyecharts tag-python"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2419.html" rel="bookmark">Flask使用Pyecharts在单个页面展示多个图表</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>在Flask页面展示echarts，主要有两种方法： 方法1、原生echarts方法 自己在前端引入echarts.js文件、自己创建div、自己初始化echarts对象、自己从官网复制并且配置图表、自己给echarts对象设置配置项实现绘制，这种方法的缺点是配置项都是js的形式比较繁琐，对于后端开发人员来说有点过于参与前端js部分的配置开发； 这种方式参照echarts官网的方式，其实跟flas … <a href="http://www.crazyant.net/2419.html" class="more-link">继续阅读<span class="screen-reader-text">Flask使用Pyecharts在单个页面展示多个图表</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2419.html" rel="bookmark"><time class="entry-date published" datetime="2019-08-04T14:24:29+00:00">2019-08-04</time><time class="updated" datetime="2019-08-04T14:39:06+00:00">2019-08-04</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/flask" rel="category tag">flask</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/echarts" rel="tag">echarts</a>、<a href="http://www.crazyant.net/tag/flask" rel="tag">flask</a>、<a href="http://www.crazyant.net/tag/pyecharts" rel="tag">pyecharts</a>、<a href="http://www.crazyant.net/tag/python" rel="tag">python</a></span><span class="comments-link"><a href="http://www.crazyant.net/2419.html#respond"><span class="screen-reader-text">于Flask使用Pyecharts在单个页面展示多个图表</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2419 --><article class="post-2404 post type-post status-publish format-standard hentry category-205 tag-206"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2404.html" rel="bookmark">听樊登的《非暴力沟通》</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>最近在爱奇艺知识买了课程《樊登教你快乐地事业有成》，第一节是《樊登：非暴力沟通》，看完后觉得自己有一些感悟。 自己的感悟： 我们总是太喜欢评价、评判别人 不论是别人主动寻求你的帮助，或者你觉得自己是前辈想要指导一下对方，我们总是喜欢评价评判别人或者给别人建议，然而每个人的世界观不同，有什么资格评价别人呢，这都是不对的，如果对方寻求安慰向你倾诉，真正应该做的应该是体会对方的感受。 就像有一句话：如果 … <a href="http://www.crazyant.net/2404.html" class="more-link">继续阅读<span class="screen-reader-text">听樊登的《非暴力沟通》</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2404.html" rel="bookmark"><time class="entry-date published updated" datetime="2019-08-04T01:00:24+00:00">2019-08-04</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/%e7%a8%8b%e5%ba%8f%e4%ba%ba%e7%94%9f" rel="category tag">程序人生</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/%e7%a8%8b%e5%ba%8f%e4%ba%ba%e7%94%9f" rel="tag">程序人生</a></span><span class="comments-link"><a href="http://www.crazyant.net/2404.html#comments"><span class="screen-reader-text">听樊登的《非暴力沟通》</span>有2条评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2404 --><article class="post-2367 post type-post status-publish format-standard hentry category-java-development category-python category-tensorflow tag-java tag-python tag-tensorflow"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2367.html" rel="bookmark">Java和Python使用Grpc访问Tensorflow的Serving代码</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>发现网上大量的代码都是mnist，我自己反正不是搞图像处理的，所以这个例子我怎么都不想搞； wide&deep这种，包含各种特征的模型，才是我的需要，iris也是从文本训练模型，所以非常简单； 本文给出Python和Java访问Tensorflow的Serving代码。 Java版本使用Grpc访问Tensorflow的Serving代码 [crayon-5d71218766da55308 … <a href="http://www.crazyant.net/2367.html" class="more-link">继续阅读<span class="screen-reader-text">Java和Python使用Grpc访问Tensorflow的Serving代码</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2367.html" rel="bookmark"><time class="entry-date published" datetime="2019-07-30T02:07:29+00:00">2019-07-30</time><time class="updated" datetime="2019-07-30T02:08:48+00:00">2019-07-30</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/java-development" rel="category tag">java</a>、<a href="http://www.crazyant.net/category/python" rel="category tag">python</a>、<a href="http://www.crazyant.net/category/tensorflow" rel="category tag">tensorflow</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/java" rel="tag">java</a>、<a href="http://www.crazyant.net/tag/python" rel="tag">python</a>、<a href="http://www.crazyant.net/tag/tensorflow" rel="tag">tensorflow</a></span><span class="comments-link"><a href="http://www.crazyant.net/2367.html#respond"><span class="screen-reader-text">于Java和Python使用Grpc访问Tensorflow的Serving代码</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2367 --><article class="post-2351 post type-post status-publish format-standard hentry category-203 tag-204"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2351.html" rel="bookmark">推荐系统：怎样实现内容相似推荐</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>很多产品想要加入推荐系统模块，最简单的就是做内容相似推荐，虽然技术简单但是效果却很好，对于增加用户粘性、提升用户留存有较多的效果，甚至很多产品后来加入了很多推荐模块之后，还是发现导流效果最好的依然是内容的相似推荐。 比如看完了一片《Python怎样读取MySQL》之后，在相似推荐中看到了一片题目为《Python操作MySQL的效果优化》的文章，很自然的就像多深入了解一下，于是就点进去看一看，那么对 … <a href="http://www.crazyant.net/2351.html" class="more-link">继续阅读<span class="screen-reader-text">推荐系统：怎样实现内容相似推荐</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2351.html" rel="bookmark"><time class="entry-date published" datetime="2019-07-28T13:35:25+00:00">2019-07-28</time><time class="updated" datetime="2019-07-28T13:40:54+00:00">2019-07-28</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/%e6%8e%a8%e8%8d%90%e7%b3%bb%e7%bb%9f" rel="category tag">推荐系统</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/%e6%8e%a8%e8%8d%90%e7%b3%bb%e7%bb%9f" rel="tag">推荐系统</a></span><span class="comments-link"><a href="http://www.crazyant.net/2351.html#respond"><span class="screen-reader-text">于推荐系统：怎样实现内容相似推荐</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2351 --><article class="post-2343 post type-post status-publish format-standard hentry category-flask category-python tag-flask tag-python"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2343.html" rel="bookmark">Flask怎样从其他Python文件导入app.route视图函数</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>用Blueprint这个东西实现； 主文件： flask_main.py</p><!-- Crayon Syntax Highlighter v_2.7.2_beta --><div class="crayon-syntax crayon-theme-xcode crayon-font-monaco crayon-os-pc print-yes notranslate" data-settings=" minimize scroll-mouseover" style=" float: left; font-size: 14px !important; line-height: 16px !important;"><div class="crayon-plain-wrap"></div><div class="crayon-main" style=""><table class="crayon-table"><tr class="crayon-row"><td class="crayon-nums " ><div class="crayon-nums-content" style="font-size: 14px !important; line-height: 16px !important;"><div class="crayon-num" >1</div><div class="crayon-num" >2</div><div class="crayon-num" >3</div><div class="crayon-num" >4</div><div class="crayon-num" >5</div><div class="crayon-num" >6</div><div class="crayon-num" >7</div><div class="crayon-num" >8</div><div class="crayon-num" >9</div><div class="crayon-num" >10</div><div class="crayon-num" >11</div><div class="crayon-num" >12</div><div class="crayon-num" >13</div></div></td><td class="crayon-code"><div class="crayon-pre" style="font-size: 14px !important; line-height: 16px !important; -moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4;"><div class="crayon-line" ><span class="crayon-e">import </span><span class="crayon-e">flask</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-e">from </span><span class="crayon-v">flask_pyecharts</span><span class="crayon-sy">.</span><span class="crayon-e">flask_moudle2 </span><span class="crayon-e">import </span><span class="crayon-e">account_api</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-v">app</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-v">flask</span><span class="crayon-sy">.</span><span class="crayon-e">Flask</span><span class="crayon-sy">(</span><span class="crayon-v">__name__</span><span class="crayon-sy">)</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-v">app</span><span class="crayon-sy">.</span><span class="crayon-e">register_blueprint</span><span class="crayon-sy">(</span><span class="crayon-v">account_api</span><span class="crayon-sy">)</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-sy">@</span><span class="crayon-v">app</span><span class="crayon-sy">.</span><span class="crayon-e">route</span><span class="crayon-sy">(</span><span class="crayon-s">"/hello"</span><span class="crayon-sy">)</span></div><div class="crayon-line" ><span class="crayon-e">def </span><span class="crayon-e">hello</span><span class="crayon-sy">(</span><span class="crayon-sy">)</span><span class="crayon-o">:</span></div><div class="crayon-line" ><span class="crayon-h"> </span><span class="crayon-st">return</span><span class="crayon-h"> </span><span class="crayon-s">"hello"</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-v">app</span><span class="crayon-sy">.</span><span class="crayon-e">run</span><span class="crayon-sy">(</span><span class="crayon-sy">)</span></div></div></td></tr></table></div></div> <!-- [Format Time: 0.0003 seconds] --><p> 引入的一个Module的文件，这个文件中写了视图函数 flask_moudle2.py</p><!-- Crayon Syntax Highlighter v_2.7.2_beta --><div class="crayon-syntax crayon-theme-xcode crayon-font-monaco crayon-os-pc print-yes notranslate" data-settings=" minimize scroll-mouseover" style=" float: left; font-size: 14px !important; line-height: 16px !important;"><div class="crayon-plain-wrap"></div><div class="crayon-main" style=""><table class="crayon-table"><tr class="crayon-row"><td class="crayon-nums " ><div class="crayon-nums-content" style="font-size: 14px !important; line-height: 16px !important;"><div class="crayon-num" >1</div><div class="crayon-num" >2</div><div class="crayon-num" >3</div><div class="crayon-num" >4</div><div class="crayon-num" >5</div><div class="crayon-num" >6</div><div class="crayon-num" >7</div></div></td><td class="crayon-code"><div class="crayon-pre" style="font-size: 14px !important; line-height: 16px !important; -moz-tab-size:4; -o-tab-size:4; -webkit-tab-size:4; tab-size:4;"><div class="crayon-line" ><span class="crayon-e">from </span><span class="crayon-e">flask </span><span class="crayon-e">import </span><span class="crayon-e">Blueprint</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-v">account_api</span><span class="crayon-h"> </span><span class="crayon-o">=</span><span class="crayon-h"> </span><span class="crayon-e">Blueprint</span><span class="crayon-sy">(</span><span class="crayon-s">\'account_api\'</span><span class="crayon-sy">,</span><span class="crayon-h"> </span><span class="crayon-v">__name__</span><span class="crayon-sy">)</span></div><div class="crayon-line" > </div><div class="crayon-line" ><span class="crayon-sy">@</span><span class="crayon-v">account_api</span><span class="crayon-sy">.</span><span class="crayon-e">route</span><span class="crayon-sy">(</span><span class="crayon-s">"/account"</span><span class="crayon-sy">)</span></div><div class="crayon-line" ><span class="crayon-e">def </span><span class="crayon-e">accountList</span><span class="crayon-sy">(</span><span class="crayon-sy">)</span><span class="crayon-o">:</span></div><div class="crayon-line" ><span class="crayon-h"> </span><span class="crayon-st">return</span><span class="crayon-h"> </span><span class="crayon-s">"list of accounts"</span></div></div></td></tr></table></div></div> <!-- [Format Time: 0.0002 seconds] --><p> 界面*问第一个函数和第二个函数都返回正常 贴一下官网蓝图的解释： Flask 用 蓝图（blueprin … <a href="http://www.crazyant.net/2343.html" class="more-link">继续阅读<span class="screen-reader-text">Flask怎样从其他Python文件导入app.route视图函数</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2343.html" rel="bookmark"><time class="entry-date published" datetime="2019-07-28T12:00:48+00:00">2019-07-28</time><time class="updated" datetime="2019-07-28T12:04:47+00:00">2019-07-28</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/flask" rel="category tag">flask</a>、<a href="http://www.crazyant.net/category/python" rel="category tag">python</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/flask" rel="tag">flask</a>、<a href="http://www.crazyant.net/tag/python" rel="tag">python</a></span><span class="comments-link"><a href="http://www.crazyant.net/2343.html#respond"><span class="screen-reader-text">于Flask怎样从其他Python文件导入app.route视图函数</span>留下评论</a></span></footer><!-- .entry-footer --></article><!-- #post-2343 --><article class="post-2336 post type-post status-publish format-standard hentry category-205 tag-207 tag-206 tag-208"><header class="entry-header"><h2 class="entry-title"><a href="http://www.crazyant.net/2336.html" rel="bookmark">我为什么从工程转了算法？</a></h2></header><!-- .entry-header --><div class="entry-summary"><p>一句话总结下：年龄大了，总想让自己做的事情有意义点，所以想让自己写的代码对产品有更多的影响、可衡量的影响。 1、我发现自己的JAVA开发和大数据业务处理对产品影响甚微 我自己工作快7年，工作主要有两个方向： A – JAVA后台业务开发 来什么需求做什么开发，增删改查，接消息发消息，因为之前做的是公司商业运营部门的需求，面向公司运营市场人员，不直接面向普通用户，系统访问量特别低，往往一 … <a href="http://www.crazyant.net/2336.html" class="more-link">继续阅读<span class="screen-reader-text">我为什么从工程转了算法？</span></a></p></div><!-- .entry-summary --><footer class="entry-footer"> <span class="posted-on"><span class="screen-reader-text">发布于 </span><a href="http://www.crazyant.net/2336.html" rel="bookmark"><time class="entry-date published" datetime="2019-07-28T09:38:47+00:00">2019-07-28</time><time class="updated" datetime="2019-07-28T09:47:00+00:00">2019-07-28</time></a></span><span class="byline"><span class="author vcard"><span class="screen-reader-text">作者 </span><a class="url fn n" href="http://www.crazyant.net/author/peishuai1987">crazyant</a></span></span><span class="cat-links"><span class="screen-reader-text">分类 </span><a href="http://www.crazyant.net/category/%e7%a8%8b%e5%ba%8f%e4%ba%ba%e7%94%9f" rel="category tag">程序人生</a></span><span class="tags-links"><span class="screen-reader-text">标签 </span><a href="http://www.crazyant.net/tag/%e5%a4%a7%e6%95%b0%e6%8d%ae" rel="tag">大数据</a>、<a href="http://www.crazyant.net/tag/%e7%a8%8b%e5%ba%8f%e4%ba%ba%e7%94%9f" rel="tag">程序人生</a>、<a href="http://www.crazyant.net/tag/%e7%ae%97%e6%b3%95" rel="tag">算法</a></span><span 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fb_timeout, fb_opts={\'overlayShow\':true,\'hideOnOverlayClick\':true,\'showCloseButton\':true,\'margin\':20,\'centerOnScroll\':false,\'enableEscapeButton\':true,\'autoScale\':true };\nif(typeof easy_fancybox_handler===\'undefined\'){\nvar easy_fancybox_handler=function(){\njQuery(\'.nofancybox,a.wp-block-file__button,a.pin-it-button,a[href*="pinterest.com/pin/create"],a[href*="facebook.com/share"],a[href*="twitter.com/share"]\').addClass(\'nolightbox\');\n/* IMG */\nvar fb_IMG_select=\'a[href*=".jpg"]:not(.nolightbox,li.nolightbox>a),area[href*=".jpg"]:not(.nolightbox),a[href*=".jpeg"]:not(.nolightbox,li.nolightbox>a),area[href*=".jpeg"]:not(.nolightbox),a[href*=".png"]:not(.nolightbox,li.nolightbox>a),area[href*=".png"]:not(.nolightbox),a[href*=".webp"]:not(.nolightbox,li.nolightbox>a),area[href*=".webp"]:not(.nolightbox)\';\njQuery(fb_IMG_select).addClass(\'fancybox image\');\nvar fb_IMG_sections=jQuery(\'.gallery,.wp-block-gallery,.tiled-gallery\');\nfb_IMG_sections.each(function(){jQuery(this).find(fb_IMG_select).attr(\'rel\',\'gallery-\'+fb_IMG_sections.index(this));});\njQuery(\'a.fancybox,area.fancybox,li.fancybox a\').each(function(){jQuery(this).fancybox(jQuery.extend({},fb_opts,{\'transitionIn\':\'elastic\',\'easingIn\':\'easeOutBack\',\'transitionOut\':\'elastic\',\'easingOut\':\'easeInBack\',\'opacity\':false,\'hideOnContentClick\':false,\'titleShow\':true,\'titlePosition\':\'over\',\'titleFromAlt\':true,\'showNavArrows\':true,\'enableKeyboardNav\':true,\'cyclic\':false}))});};\njQuery(\'a.fancybox-close\').on(\'click\',function(e){e.preventDefault();jQuery.fancybox.close()});\n};\nvar easy_fancybox_auto=function(){setTimeout(function(){jQuery(\'#fancybox-auto\').trigger(\'click\')},1000);};\njQuery(easy_fancybox_handler);jQuery(document).on(\'post-load\',easy_fancybox_handler);\njQuery(easy_fancybox_auto);</script> <script type=\'text/javascript\' src=\'http://www.crazyant.net/wp-content/plugins/easy-fancybox/js/jquery.easing.min.js\'></script> <script type=\'text/javascript\' src=\'http://www.crazyant.net/wp-content/plugins/easy-fancybox/js/jquery.mousewheel.min.js\'></script> <script type=\'text/javascript\' src=\'http://www.crazyant.net/wp-includes/js/wp-embed.min.js\'></script> </body></html>'2、解析HTML得到数据
def parse_single_html(html):
"""
解析单个HTML，得到数据
@return list({"link", "title", [label]})
"""
soup = BeautifulSoup(html, 'html.parser')
articles = soup.find_all("article")
datas = []
for article in articles:
# 查找超链接
title_node = (
article
.find("h2", class_="entry-title")
.find("a")
)
title = title_node.get_text()
link = title_node["href"]
# 查找标签列表
tag_nodes = (
article
.find("footer", class_="entry-footer")
.find("span", class_="tags-links")
.find_all("a")
)
tags = [tag_node.get_text() for tag_node in tag_nodes]
datas.append(
{"title":title, "link":link, "tags":tags}
)
return datas
pprint.pprint(parse_single_html(htmls[0]))
[{'link': 'http://www.crazyant.net/2469.html',
'tags': ['java', 'spark'],
'title': 'Spark使用Java开发遇到的那些类型错误'},
{'link': 'http://www.crazyant.net/2454.html',
'tags': ['pandas', 'python', 'sklearn', '推荐系统'],
'title': '推荐系统：实现文章相似推荐的简单实例'},
{'link': 'http://www.crazyant.net/2447.html',
'tags': ['item2vec', 'java', '推荐系统'],
'title': 'Spark使用word2vec训练item2vec实现内容相关推荐'},
{'link': 'http://www.crazyant.net/2434.html',
'tags': ['pandas', 'python'],
'title': 'Pandas中对轴axis=0和axis=1的理解'},
{'link': 'http://www.crazyant.net/2419.html',
'tags': ['echarts', 'flask', 'pyecharts', 'python'],
'title': 'Flask使用Pyecharts在单个页面展示多个图表'},
{'link': 'http://www.crazyant.net/2404.html',
'tags': ['程序人生'],
'title': '听樊登的《非暴力沟通》'},
{'link': 'http://www.crazyant.net/2367.html',
'tags': ['java', 'python', 'tensorflow'],
'title': 'Java和Python使用Grpc访问Tensorflow的Serving代码'},
{'link': 'http://www.crazyant.net/2351.html',
'tags': ['推荐系统'],
'title': '推荐系统：怎样实现内容相似推荐'},
{'link': 'http://www.crazyant.net/2343.html',
'tags': ['flask', 'python'],
'title': 'Flask怎样从其他Python文件导入app.route视图函数'},
{'link': 'http://www.crazyant.net/2336.html',
'tags': ['大数据', '程序人生', '算法'],
'title': '我为什么从工程转了算法？'}]# 执行所有的HTML页面的解析
all_datas = []
for html in htmls:
all_datas.extend(parse_single_html(html))
all_datas
[{'title': 'Spark使用Java开发遇到的那些类型错误',
'link': 'http://www.crazyant.net/2469.html',
'tags': ['java', 'spark']},
{'title': '推荐系统：实现文章相似推荐的简单实例',
'link': 'http://www.crazyant.net/2454.html',
'tags': ['pandas', 'python', 'sklearn', '推荐系统']},
{'title': 'Spark使用word2vec训练item2vec实现内容相关推荐',
'link': 'http://www.crazyant.net/2447.html',
'tags': ['item2vec', 'java', '推荐系统']},
{'title': 'python执行shell的两种方法',
'link': 'http://www.crazyant.net/1319.html',
'tags': ['python', 'shell']},
{'title': 'Python封装的常用日期函数',
'link': 'http://www.crazyant.net/1309.html',
'tags': ['python']},
{'title': 'python子类调用父类的方法',
'link': 'http://www.crazyant.net/1303.html',
'tags': ['python']},
{'title': 'wordpress按层级方式显示分类链接的方法',
'link': 'http://www.crazyant.net/1297.html',
'tags': ['wordpress']},
{'title': 'Firefox数据采集插件大全',
'link': 'http://www.crazyant.net/1292.html',
'tags': ['数据采集', '爬虫']},
{'title': 'Python生成文件md5校验值函数',
'link': 'http://www.crazyant.net/1216.html',
'tags': ['python']},
{'title': '网站从织梦DEDECMS迁移到WordPress过程以及URL重定向方法',
'link': 'http://www.crazyant.net/1214.html',
'tags': ['织梦']},
{'title': 'shell/hadoop/hive一些有用命令收集',
'link': 'http://www.crazyant.net/1209.html',
'tags': ['hadoop', 'hive', 'mysql', 'shell']},
{'title': 'Hive开发中使用变量的两种方法',
'link': 'http://www.crazyant.net/1203.html',
'tags': ['hive']},
{'title': 'hive从查询中获取数据插入到表或动态分区',
'link': 'http://www.crazyant.net/1197.html',
'tags': ['hive']},
{'title': 'Hive元数据存于mysql中文乱码解决',
'link': 'http://www.crazyant.net/1193.html',
'tags': ['hive', 'mysql']},
{'title': '为eclipse安装python、shell开发环境和SVN插件',
'link': 'http://www.crazyant.net/1185.html',
'tags': ['python', 'shell']},
{'title': 'hadoop第一个程序WordCount.java的编译运行过程',
'link': 'http://www.crazyant.net/1144.html',
'tags': ['hadoop']},
{'title': 'MYSQL向数据表插入默认字段值的方法',
'link': 'http://www.crazyant.net/1129.html',
'tags': ['mysql']},
{'title': 'Hadoop-Streaming实战经验及问题解决方法总结',
'link': 'http://www.crazyant.net/1122.html',
'tags': ['hadoop']},
{'title': 'Hadoop之使用python实现数据集合间join操作',
'link': 'http://www.crazyant.net/1112.html',
'tags': ['hadoop', 'python']},
{'title': 'Rational Rose根据Java代码自动生成类图（教程和错误解决）',
'link': 'http://www.crazyant.net/1094.html',
'tags': ['java']},
{'title': 'MathType(数学公式编辑器) 汉化绿色版V6.7下载',
'link': 'http://www.crazyant.net/1088.html',
'tags': ['mathtype']},
{'title': 'JSP使用JNA调用DLL函数遇到的几个问题',
'link': 'http://www.crazyant.net/1072.html',
'tags': ['java']},
{'title': '读《疯狂的站长》- 回顾反思我的个人站长路',
'link': 'http://www.crazyant.net/1066.html',
'tags': ['站长']},
{'title': '给计算机专业求职的同学推荐几本书',
'link': 'http://www.crazyant.net/1064.html',
'tags': ['程序人生']},
{'title': 'MySQL数据库存储过程教程',
'link': 'http://www.crazyant.net/1061.html',
'tags': ['mysql']},
{'title': 'Magento获取指定分类下的所有子分类信息',
'link': 'http://www.crazyant.net/1057.html',
'tags': ['magento', 'php']},
{'title': 'WIN7使用VisualSVN建立SVN服务器',
'link': 'http://www.crazyant.net/1055.html',
'tags': ['svn', 'win7']},
{'title': '织梦DEDECMS简洁蓝色模板免费下载（资讯文章类）',
'link': 'http://www.crazyant.net/1044.html',
'tags': ['织梦']},
{'title': 'Django基本命令最全收集',
'link': 'http://www.crazyant.net/1036.html',
'tags': ['django', 'python']},
{'title': '2012年百度、腾讯、微软、奇虎360、人人、去哪网找工作经历总结',
'link': 'http://www.crazyant.net/1030.html',
'tags': ['程序人生']},
{'title': 'PHP对数组的高级遍历和操作处理方法',
'link': 'http://www.crazyant.net/1022.html',
'tags': ['php']},
{'title': '使用PHP连接、操纵Memcached的原理和教程',
'link': 'http://www.crazyant.net/1014.html',
'tags': ['memcached', 'php', '数据库']},
{'title': 'Django关于站点管理Admin Site的常见问题解决方法',
'link': 'http://www.crazyant.net/1005.html',
'tags': ['django', 'python']},
{'title': '对Django框架架构和Request/Response处理流程的分析',
'link': 'http://www.crazyant.net/1001.html',
'tags': ['django', 'python']},
{'title': 'PHP开发者最好的学习资源收集',
'link': 'http://www.crazyant.net/970.html',
'tags': ['php']},
{'title': 'Ubuntu10.10 Server+Nginx+Django+Postgresql安装步骤',
'link': 'http://www.crazyant.net/955.html',
'tags': ['django', 'ngnix', 'ubuntu']},
{'title': 'PHP和MySQL处理树状、分级、无限分类、分层数据的方法',
'link': 'http://www.crazyant.net/930.html',
'tags': ['mysql', 'php']},
{'title': 'PHP创建和解析JSON数据的方法',
'link': 'http://www.crazyant.net/920.html',
'tags': ['json', 'php']},len(all_datas)
239
3、将结果输出存储
with open("all_article_links.json", "w") as fout:
for data in all_datas:
fout.write(json.dumps(data, ensure_ascii=False)+"\n")本文同时发布了视频教程，代码以及视频下载，可以关注微信公众号“蚂蚁学Python”获取。