Collecting Public Data from Facebook Using Selenium and Beautiful Soup Despite having an API, it is getting increasingly difficult to get data from Facebook — even the most transparent, public,…

Chinese characters can be roughly divided info “Traditional” and “Simplified”. If you need to convert one to another, I think the most convenient tool is OpenCC in Python. [NLP][Python] Use…

1.背景 我们在爬取网页时一般会使用到三个爬虫库：requests，scrapy，selenium。requests一般用于小型爬虫，scrapy用于构建大的爬虫项目，而selenium主要用来应付负责的页面（复杂js渲染的页面，请求非常难构造，或者构造方式经常变化）。 在我们面对大型爬虫项目时，肯定会优选scrapy框架来开发，但是在解析复杂JS渲染的页面时，又很麻烦。 尽管使用selenium浏览器渲染来抓取这样的页面很方便，这种方式下，我们不需要关心页面后台发生了怎样的请求，也不需要分析整个页面的渲染过程，我们只需要关心页面最终结果即可，可见即可爬，但是selenium的效率又太低。 所以，如果可以在scrapy中，集成selenium，让selenium负责复杂页面的爬取，那么这样的爬虫就无敌了，可以爬取任何网站了。 2. 环境 python 3.6.1 系统：win7 IDE：pycharm 安装过chrome浏览器 配置好chromedriver（设置好环境变量） selenium 3.7.0 scrapy 1.4.0 3.原理分析 3.1. 分析request请求的流程 首先看一下scrapy最新的架构图（https://blog.csdn.net/zwq912318834/article/details/79720742）： ———————————————— 部分流程： 第一：爬虫引擎生成requests请求，送往scheduler调度模块，进入等待队列，等待调度。 第二：scheduler模块开始调度这些requests，出队，发往爬虫引擎。 第三：爬虫引擎将这些requests送到下载中间件（多个，例如加header，代理，自定义等等）进行处理。 第四：处理完之后，送往Downloader模块进行下载。 从这个处理过程来看，突破口就在下载中间件部分，用selenium直接处理掉request请求。 ———————————————— 版权声明：本文为CSDN博主「Kosmoo」的原创文章，遵循CC…

This is the home page for the project of NLP. Source: NLTK :: Natural Language Toolkit Stop words:  words such as “what” or “the” won’t have any predicting power since…

Natural Language Processing With spaCy in Python by Taranjeet Singh 7 Comments  data-science intermediate Mark as Completed Tweet Share Email Table of Contents What Are NLP and spaCy? Installation How to Install spaCy How to Download…

This project is started in 2000 when the new venture established with partner and promoted the newly designed web-based system to local small and medium sized enterprises. The system has…

This project is building an application for stock market analysis. The project is built on Python using library from Yahoo! Finance. https://medium.com/@ishan.s_54240/stock-data-and-analysis-529aa9aee60 The first part is of course download the…

Import postal codes for Japan Article 06/04/2022 2 minutes to read 4 contributors In Japan, the Japan Postal Office provides a ZIP code file that you can import into Dynamics…

Tutorial to build a scrapy spider to crawl Alibaba.com search results and extract product name, price, seller name, url etc. Available to download on Github Source: How to scrape Alibaba.com…

Via checking the ranking of corporate website to assess the potential of potential customers. There are too many prospects in database and must do some cleansing or qualification before give…