Python 3 crawler requests + beautiful soup4 (BS4) tutorial

Soon after learning Python crawler, I couldn't wait to find a website to practice, New style pavilion : a novel website. Precondition preparation Install Python and necessary modules (requests, bs4), don't know requests and bs4 You can go to the official website and watch the course later Reptile thinking At the beginning of writing the white o ...

Posted by Jnerocorp on Sat, 07 Dec 2019 21:50:40 -0800

Scrapy Crawler and Case Analysis

Due to the rapid development of the Internet, all the information is in a state of massive accumulation. We need to obtain a large amount of data from the outside world and filter the useless data in a large amount of data.We need to specify a crawl for our useful data, so there are now crawling techniques that allow us to quickly get the data ...

Posted by klance on Sat, 07 Dec 2019 04:35:57 -0800

python recursion and dichotomy

A built-in function 1. Revsedflip, return iterator # take s Inversion s = 'It's not Shanghai. Tap water comes from the sea' # Method 1 print(s[::-1]) # Method two s1 = reversed(s) i = '' for el in s1:   i +=el   print(i) Slice slice lis = ['nishi','woshi','shuia','benjim'] s = slice(1,3) print(lis[s])   3.formate # Format output s = ...

Posted by Benny007 on Fri, 06 Dec 2019 23:42:27 -0800

Introduction to Python crawler 33-100 "king of the sea" review data grabbing

1. Analysis before crawling of review data of Haiwang Haiwang was shown, and then the word of mouth exploded. For us, there's another movie that can be climbed and analyzed. It's so beautiful~ Excerpt a comment Just after watching zero field, Director Wen's movie has been very good, whether it's speed 7, chainsaw or soul summoning. Fighting ...

Posted by piet123 on Fri, 06 Dec 2019 22:20:22 -0800

Exporting the full version of excel from Python xlwt

There is a group of task data, which needs to be downloaded from excel. If it is only exported, it is very convenient to export with csv. But to export beautiful styles, you need to merge cells, set back color, font, border, etc. CSV is in plain text format and does not support setting various styles. After a day of research, I wrote the c ...

Posted by nabeel21 on Fri, 06 Dec 2019 20:47:25 -0800

python - multi process crawling fish high beauty image - version 2.0

https://www.cnblogs.com/summer1019/p/10364469.html This is a picture I wrote a few days ago about "multi process crawling for beautiful women with high beauty". Today, I have nothing to do to climb for some new beautiful anchors-_- But didn't crawl to any content. Open the source code of the web page and find that the property of the ...

Posted by pfchin on Fri, 06 Dec 2019 19:24:51 -0800

zookeeper dynamically manages nginx configuration

Suppose we have a scenario in which all servers share the same configuration file, we can't maintain each server manually. At this time, we can use the configuration management function of zookeeper. Environment: python + nginx + zookeeper Objective: when the configuration file in zookeeper changes, nginx automatically pulls the latest config ...

Posted by tacojohn on Fri, 06 Dec 2019 18:35:38 -0800

CentOS MySQL create database - encoding settings

Create database mysqladmin -h '192.168.2.233' -u root -p create namc; View newly created database encoding mysql> SHOW VARIABLES LIKE 'character%' -> ; +--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_s ...

Posted by disconne on Fri, 06 Dec 2019 10:59:26 -0800

Summary of HttpServletRequest object

The HttpServletRequest object represents the client's request. When the client accesses the server through the HTTP protocol, all the information in the HTTP request header is encapsulated in a web container. By the method provided by this object, all the information requested by the client can be obtained. Request Common Methods for Getting Cl ...

Posted by lindm on Fri, 06 Dec 2019 10:34:15 -0800

JS Foundation: implementation of toLowerCase and toUpperCase

I. thinking caused by one question Today, I ran into a problem in leetCode Original question link: https://leetcode.com/problems... This problem requires the implementation of a function from upper case to lower case. At that time, the first thing that came to mind was that js did not provide atoLowerCase function? So I wrote down the answer ...

Posted by -Mike- on Fri, 06 Dec 2019 07:23:23 -0800