Programmer Think

1. Introduction Little loser: brother Yu, the Chinese New Year is coming soon. lol can't be whole! Xiaoyu: No, I want to learn Loser: are you telling me a joke about the end of the year of the ox? Xiaoyu: finish?? Hey ~ thanks, brother, you reminded me! Little loser:... Thanks to me, too. Meow The Chinese New Year is just around the cor ...

Gently learn from reptile - skilful use of scratch frame 5 - Monkey stealing peach (1) Last class talked about the start-up process of the crawler. I believe you have some understanding of the framework. Today we will talk about the crawler branch and analyze the page. We compare a peach tree to the data we catch, but only the peaches in the ...

preface In python crawlers, multi process crawling is generally used, because multithreading can not improve CPU utilization, and multithreading is actually executed alternately, and multi process is executed concurrently. Multi process, as the name suggests, multiple processes execute concurrently, which can effectively improve the execu ...

Cause: when implementing a system, we need to add the scratch crawler framework, which involves multiple crawlers. Originally, we just wanted to simply start the crawler. We refer to the fifth link, but it is still inconvenient. Later, we learned that scratch can manage crawlers, such as modify, delete, add, run, etc., so we introduced the scra ...

stay Python crawler actual combat (1) | climb the top 250 movies of Douban (Part 1) In, the result of our final climb out is not very perfect. How can we be reconciled to the "excellence and pursuit of perfection" program ape So today, use python to climb into the top 250 movies on douban.com! Step! Version! Here he is! We used urll ...

☘ preface ☘ What can you learn after reading this blog? Reading and writing methods of excel How to get the interface Multithreading improves crawler efficiency Cloud server deployment web service real-time update In this blog, based on the previous article, I will further explore the website interface api to improve the access speed, fur ...

Introduction to the sketch framework Scratch is a fast and high-level screen capture and Web Capture framework developed by Python language, which is used to capture web sites and extract structured data from pages. Trapdoor of the scratch frame: https://scrapy.org Operation principle of sketch framework Scratch engine: communication ...

Computers can only understand machine codes. In the final analysis, programming language is just a string of words. The purpose is to make it easier for humans to write what they want computers to do. The real magic is done by compilers and interpreters, which bridge the gap between the two. The interpreter reads the code line by line and conve ...

preface Python: what? Writing crawler, you actually use java? you 're right! Today, break the routine and write a simple crawler in java. It is mainly based on java. Some functions need crawlers; It's a little late to change the question now, so I have to bite the bullet (no matter how ridiculous the road I choose, I have to finish o(﹏╥ ...

Kevin, who has disappeared for a week, is back! We won't talk about sensitive things in this issue. Because * I've had enough. Tell me about a friend's bitter history of Yaohao (license plate). And how I used python Technology (crawler, data analysis, visualization) to help him find the reason and make him more sad. The data in this articl ...