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This article introduces the relevant knowledge of "how to understand Django in Python". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Compared with other web frameworks, Django has the advantage of being large and comprehensive. The framework itself integrates many functions, such as ORM, model binding, template engine, cache, Session and so on. Django is also a MVC framework. But in Django, the part of the controller that accepts user input is handled by the framework itself, so Django focuses more on Model, Template, and Views, which is called MTV mode:

M stands for the model (Model), the data access layer. This layer handles all transactions related to data: how to access, how to verify validity, what behaviors are included, and the relationships between the data.

T stands for Template, that is, the presentation layer. This layer deals with performance-related decisions: how to display them in pages or other types of documents.

V stands for the View, that is, the business logic layer. This layer contains the logic for accessing the model and fetching the appropriate template. You can think of it as a bridge between the model and the template.

Why use Python for Web development? The outstanding advantages of Django over any Web framework are reflected in the following aspects:

Simple learning curve: like Python, Django is easy to learn. You only need to go through this step-by-step tutorial on the Django website, which well explains the basic functions of Django. On the other hand, learning Ruby on Rails may take longer.

Automatically create SQL tables: Django will automatically create the structure you specify for you.

Form generation: after creating a Form class in Django and linking it to the model, the form generator in Django is responsible for rendering the form, validating the data, and saving the data.

Administrative interface: just like the SQL table, once you decide on the structure, Django creates an administrative interface that allows you to manage the database.

Django Shell: Python shell in the environment of the Django project is provided by Django shell.

Powerful database features: with python class inheritance, a few lines of code can have a rich, dynamic database operation interface (API), if necessary, you can also execute the SQL statement ORM, which realizes the decoupling of the data model and the database, that is, the design of the data model does not need to rely on a specific database, through simple configuration can easily change the database.

Caching system: Django is used in conjunction with memcached, redis or other caching systems to improve the loading speed of pages and make the user experience better.

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