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Links to the original text: https://www.jianshu.com/u/8f2987e2f9fb Below are some libraries written by Python for parsing and manipulating special text formats, hoping to help you. 01.Tablib https://www.oschina.net/p/Tablib Tablib is a Pytho ...

Generic Asynchronous Threads Download zip Packets and Export excel Files Preface: The page clicks the download button (export excel file in batches and export in zip package format). It uses asynchronous thread to query data, encapsulate excel a ...

SQL Profile and Table Creation 1. Structure of tables Relational databases manage data through two-dimensional tables consisting of rows and columns similar to Excel worksheets. Two-dimensional tables used to manage data are abbreviated as tables in relational databases. The data returned according to the content of the SQL statement must also ...

A Brief Talk on Data Structure-Joseph Ring What is Joseph Ring? Description of the problem, there is a scene: a group of children in the playground surrounded by a circle, they agreed to report from a person from the beginning (similar to the n ...

Introduction to Pandas (Learning Notes 1) - Data Structure of Pandas Data structure of Pandas Series 1. Build Series by list 2. Access to data and indexes 3. Obtaining data through index 4. The corresponding relationship between index and data i ...

Referring to Gao Nan's posts, they are purely for learning. The links are as follows: https://www.zhihu.com/question/33783546/answer/775946401 Here, the visualization of data is realized mainly through folium. This is a niche library, but there are some functions to be used, still need to understand. I ...

Catalog 1. Overview 2. Effect Display 3. Ideas for implementation 1. Freeze Rows, Freeze Columns 2. Row Height Adaptive 3. Ant Line 4. Test Code 1. Add tabular data 2. Set frozen rows and columns 3. Row Height, Column Width 4. Cell Background Color ...

Differences between simple factories, factory methods, Abstract factories, strategy patterns, strategies and factories Combined with simple examples and UML diagrams, the simple principle of factory pattern is explained.   I. Introduction Ten years ago, there was an explosive family who had three cars (Benz, Bmw, Audi) and hired drivers to ...

Editor of xl_echo, welcome to reprint, reprint please declare the source of the article. Welcome to add echo Wechat (micro signal: t2421499075) for communication and learning. Never lose a hundred battles, never claim to win, never fail, and always strive to move forward. —— This is the real strength!! Read Suggestions: If the syst ...

Table calculation In a boredom, atm found an old program. The function of this program is similar to Excel, which operates on a table. Let's assume that the table has n rows, with m cells in each row. The content of each lattice can be either a positive integer or a formula. The formula includes thre ...