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PIL library basic operation quick start PIL (pilot) -- image processing library of python 1. How to read in a picture? PIL(python Imaging Library, python Image processing library) provides Image processing functions, including Image scaling, acquisition, selection, reading and writing, among which the most important module is Image. Next, l ...

If this article is helpful to you, please also 'praise and pay attention', and give me the greatest encouragement to those who are very lost because of the upcoming school. When I brush the force buckle, I find that it is slightly clumsy to deal with some problems such as double recursion, especially some assignment and condition judgment ar ...

json codec and decoder of Python standard library 1, Introduction to Python json Library JSON (JavaScript Object Notation) is a lightweight data exchange format conceived and designed by Douglas Crockford. Its content is composed of attributes and values, so it also has the advantage of easy reading and processing. JSON is a data form ...

Database (warehouse)Model (warehouse design drawing) fields: CharField，IntegerField，FloatField，DateTimeField，             OneToOneField，ManyToManyField，Foreignkey fields parameter: max_length,choices Instance (goods)QuerySet query set (package) List like objects Indexable, sliced, in (instance in queryset) Database connection Dja ...

Note: This article is very long and should be read. Reprinting without permission is strictly prohibited! Please obtain the permission of the author before reprinting Write in front During the holiday, I was doing a service outsourcing competition, which was related to federal learning, so I wrote this blog (Series) to record my learning. ...

[common sense of sorting out basic knowledge of Python] 1, Basic noun interpretation catalogue [common sense of sorting out basic knowledge of Python] i. explanation of basic terms Basic information about Python 1. The origin of Python 2. Basic working mechanism of Python 3. Python features data type variable function parameter Com ...

Last month, my tutor asked me to be a little crawler to share the process requirement analysis Destination url: AWS Fargate price - serverless container service - AWS cloud service (amazon.com) You need to crawl the price of Fragate Spot in the web page, but the price is different in different regions, and the price will change every ...

Characteristic Engineering 1. Definitions 1.1 why feature engineering is needed The features in the sample data may have missing values, duplicate values, abnormal values, etc., so the relevant noise data in the features need to be processed Processing purpose: there is a purer sample set, so that the model can have better prediction abil ...

Key points of this article:         1. How to respond faster through caching?         2. What is middleware?         3. How to realize the paging function of the website?         4. Generate csv fil ...

Teach yourself Python and record things that need special attention Unit1 start 1.1 setting up programming environment 1.3 solving installation problems 1.4 running Python program from terminal Method, just enter python 1.5 summary Unit2 variables and simple data types 2.1 run hello_word.py 2.2 variables 2.2.1 naming and use of ...