urllib.request crawls the sister map website (regular expression), and the path can be changed

Simple crawler to crawl website pictures: First, we need to "stampede", that is, get familiar with the rules of crawling html source code of websites, and filter out the tags and URLs we need (string filtering is OK, but regular expressions are more convenient, and I only learned a little). ) Then there is the basic ...

Posted on Tue, 19 Nov 2019 16:03:57 -0500 by twilson

Implementation principle of movie recommendation system and download of Python source code

In this tutorial, we will implement a recommendation system based on the similarity of movie content itself. We will use natural language processing/ NLP Technology to extract the features of each movie, then establish cosine similarity matrix between different movies, and finally use the similarity matrix to recommend the 10 most similar movie ...

Posted on Mon, 18 Nov 2019 04:41:27 -0500 by westair

Can't read my colleague's code yet?Super Stream Flow Posture Not Learned yet

Java 8 New Features Series Article Index. Jdk14 is coming out, can't you use Optional's elegant handling of null pointers yet? Jdk14 is coming out, Jdk8's time handling posture is still unknown? Can't read my colleague's code yet?A look at Lambda expressions, function interfaces Preface We all know that Lambda and Stream are the two highlight ...

Posted on Sun, 17 Nov 2019 20:44:10 -0500 by giannitom

Take a look at the new features of Java Stream

I began to try to use the new features of Java half a year ago, and I was most impressed by stream stream and Optional. Stream improves the view efficiency and makes the code look fresh. Why use streams? In order to improve the development efficiency, it has been explained in the abstract. Flow can help us operate the set efficiently. Flow can ...

Posted on Sat, 16 Nov 2019 10:49:50 -0500 by uncleronin

Prometheus client development: Tencent cloud CLB

1: Introduction With the gradual expansion of the use of prometheus, the official definition of client exporter can meet most of our needs, but many monitoring needs us to customize the development. The following content is based on Tencent cloud SDK, monitoring the traffic of Tencent cloud CLB. Two: Script # coding:utf-8 import argparse impor ...

Posted on Fri, 15 Nov 2019 09:25:50 -0500 by ajcrm125

Analysis of the principle of the Robust thermal restoration framework of meituan

I. current situation of thermal repair frame At present, the hot fix framework mainly includes QQ space patch, HotFix, Tinker, robot, etc. According to the principle, the thermal repair framework can be roughly divided into three categories: Intervening ClassLoader to load dex based on multidex mechanism native substitution method structure In ...

Posted on Thu, 14 Nov 2019 22:49:36 -0500 by Timewell

Introduction to python built-in module collections

Catalog Introduction to python built-in module collections 1,namedtuple 2,deque 3,defaultdict 4,OrderedDict 5,ChainMap 6,Counter 7. Summary Introduction to python built-in module collections collections is a collection module built into Python that provides ...

Posted on Thu, 14 Nov 2019 21:45:44 -0500 by ub_kh

java advanced 23 lambda method reference

1. Reference static method First, add a static method to TestLambda: public static boolean testHero(Hero h) { return h.hp>100 && h.damage<50; } Lambda expression: filter(heros, h->h.hp>100 && h.damage<50); Call this static method in the Lambda expression: filter(heros, h -> TestLambda. ...

Posted on Wed, 13 Nov 2019 15:01:50 -0500 by korngold

What's new in JDK

New features of JDK (1) jdk5 (Master) Packing and unpacking Generic Enhanced for Static import Variable parameters Enumeration            public enum Direction {               //FRONT, BEHIND, LEFT, RIGHT;              // Front, behind, left, right;      FRONT("Front") {         @Override         public void show( ...

Posted on Wed, 13 Nov 2019 14:58:45 -0500 by jinwu

Raspberry pie + DHT11+onenet cloud platform

Function: Raspberry pie collects temperature and humidity and transmits them to cloud platform through HTTP protocol I. preparation: Raspberry pie 3b, dht11 temperature and humidity sensor, onenet platform II. onenet cloud platform configuration 1. Enter the official website and click the developer center 2. Add pr ...

Posted on Tue, 12 Nov 2019 13:11:53 -0500 by bulrush