flask microframework

Database Migration During the development process, the database model needs to be modified, and the database will be updated after the modification. The most straightforward way to do this is to delete the old table, but the data is lost. A better solution is to use the database migration framework, which can track changes in the database schema and then apply the changes to the database. In flask, you can use the

I have been studying flask recently. Since the HTTP interface provided by gfirefly uses flask, it used to write some simple operations in the game. Recently, many flask operations have been involved, so I studied it carefully. I have some experience with the request context and app context of flask, so I would like to

Flask relies on two external libraries: Werkzeug and JINJA2. Werkzeug is a toolset for WSGI (a standard Python interface developed and deployed between Web applications and multiple servers), JINJA2 is responsible for rendering the template. First, installation Prerequisites for flask Installation 1. The python2.x version is installed 2. Easy_install installed Before installing

The 1th chapter of course IntroductoryIntroduce the contents of the course1-1 at the outset1-2 Course Maintenance and questionsThe 2nd Chapter Flask Basic Principles and core knowledgeIn this chapter we first introduce the best package and virtual environment management tools that Python has officially recommended: Pipenv. Then we will learn the unique URL principle, redirect, Response object response.2-1 Fish Book is a What kind of product2-2 prepara

Flask itself can directly start the HTTP server, but due to problems such as management, deployment, and performance, we generally do not use the HTTP server of Flask itself in the production environment. From the existing practices, for Flask, a better deployment method is to use uWSGI as the WSGI container and Nginx as the front-end server. The advantages of th

Using the Python Flask framework to build a simple digital commodity payment solution, pythonflask As a programmer, I sometimes forget my abilities. When things do not develop in the way you want, it is easy to forget that you have the ability to change it. Yesterday, I realized that I was overwhelmed by the payment method of the books I sold. After my book is complete, I used three different digital product payment processors. After I was dissatisfie

[Flask practice] To solve configuration problems related to QQ mailbox/mysql, flaskmysql I learned from the book flask web (Miguel, with the cover of a dog) and intend to implement a tourism website. During this process, I found that some changes need to be made to the flasky blog program in the book: 1. Registration Email:126, qq and other email addresses are required in China. By default, readers have lea

Python Flask framework and Nginx implement static file access restrictions, Nginx Configuration Ngnix, a high-performance web server, is undoubtedly the current darling. Superior performance, flexible scalability, attacking the city and fighting the world in the server field. Static files are an indispensable part of most websites. It is also common to use Nginx to process static files. However, some static files are not disclosed to any user in any s

This section Miguel the translation address of the Grinberg tutorial: http://www.pythondoc.com/flask-mega-tutorial/webforms.htmlOpen source China's: http://www.oschina.net/translate/the-flask-mega-tutorial-part-iii-web-formsEnglish Original address: http://blog.miguelgrinberg.com/post/the-flask-mega-tutorial-part-iii-web-formsPS. Suggest English is better to read

This article mainly introduces the Python Flask framework and Nginx's static file access restriction function. Nginx uses its own XSendfile. For more information, see Nginx configuration Ngnix, a high-performance web server, is undoubtedly the current darling. Superior performance, flexible scalability, attacking the city and fighting the world in the server field. Static files are an indispensable part of most websites. It is also common to use Ngin

installationThe installation is simple and is installed using a common Python package. I recommend that you install the base skeleton application separately so that you can run the application immediately (no model number) and a template that is easy to grow. Simple installation You can install the framework in the following ways: $ pip Install Flask-appbuilder Recommended Virtual Environment Installation virtual environments ar

Tags: support mysql OTT 127.0.0.1 upgrade database std CharFlask-sqlalchemy Installation and Setup SQLALchemy is actually an abstraction of the database, so that developers do not have to deal with SQL statements directly, but through the Python object to manipulate the database, while discarding some performance overhead, in exchange for the development efficiency of a large increase SQLAlchemy is a relational database framework that provides high-level ORM and the operation of the

Storing data in a database is an integral part of any software application. Regardless of the control of the database there is a master control of that data. Blockchain technology stores data in chunks within a blockchain network. As a result, as long as a node is synchronized with the network, they get a copy of the data in the chunk. Therefore, there is no specific data master in this technology.In this tutorial, we'll write a smart contract (which I'll explain further) to keep the user data o

Before writing a flask development environment to build, continue today, to carry out a small project-blog system. Blog system is very simple, only one page, and then though small spite. The goal here is not to do projects, this article is meant to convey the following knowledge through this exercise: 1, the overall understanding of the Flask project directory structure 2. Operation mechanism of

While Flask is a lightweight framework, it also provides many convenient features such as unit testing and database migration for large Web applications, so let's look at the structure of building large Web applications using the Python flask Framework Example: While small Web applications can be handy with a single script, this approach does not scale well. As applications become more complex, processing

This article describes how to implement full-text search in the Python Flask framework. this basic web function is very simple to implement. For more information, see Getting started with the full-text search engine Unfortunately, the full-text search support of relational databases is not standardized. Different databases use their own methods for full-text retrieval, and SQLAlchemy does not provide a good abstraction for full-text retrieval. We now