Programmer Think

Article catalogue preface1, Analyze the composition of Taobao URL2, View the web source code and extract information with re library 1. Check the source code2.re database extraction information 3: Function filling4: Main function filling5: Complete code preface This paper simply uses python's requests library and re regular expressio ...

WebMagic introduction The WebMagic project code is divided into two parts: core and extension. The core part is a simplified and modular crawler implementation, while the extension part includes some convenient and practical functions. The architecture design of WebMagic refers to scripy, and the goal is to be modular as much as possible and r ...

In daily code, we always face a lot of problems of if... elif... else conditional branch selection. To tell you the truth, the first thing I recommend in most cases is to write honestly if... elif, and try to extract the content under each branch into independent functions. Clear structure and clear intention are great convenience for writing a ...

Seriously, when I wrote this script, I didn't understand the basic syntax of python. I can only say that language is not important, just easy to use... As for why I want to delete QQ dynamics, I just don't want to always see those childish words that were sent that year and today. There are many dynamics (although QQ has not been used in recen ...

The essence of a computer is calculation. Internally, it is the change of bits of 0 and 1, and externally, it is the change of data. So what data can computers process? In essence, data is stored in bytes. In terms of performance, they are integers, floating-point numbers, strings and so on. Python's basic data types are no more than this. I ...

1, Task: The purpose is to extract various commodity information in the network by using java crawler, establish a unified data model to store data, and describe the basic attributes of commodities through the data model. Such as spu, sku, product description, price and other information. At the same time, it is necessary to eliminate unnecess ...

background My girlfriend complained two days ago that a big V made a video with many popular expressions. Say the big V said he was crawled directly by someone in the team. Ask me when to give her a crawl? After many days of nagging, I finally took action. Target Site Analysis First I found a website with popular emoticons. Let's have f ...

previously on Before station b, the web page data is crawled, which can be crawled by python requests and Selenium. However, the web version of live consumption data of station b cannot be displayed and can only be seen on the mobile phone, so this article is available. I read the article before that fiddler can also crawl, but I tried unsuc ...

What is a reptile Crawler is to grab the information in the web page according to certain rules. The crawler process is roughly divided into the following steps: Send request to target pageGet the response content of the requestParse the returned response content according to certain rules to obtain the desired informationSave the obtained in ...

SuperSpider ==Ten thousand words long text, it is recommended to use the directory to click and consult, which is conducive to efficient development. Suggest like collection== Request capture steps [1]First determine whether to load the website dynamically [2]look for URL law [3]regular expression | xpath expression [4]Define the progra ...