Python Django Interview Questions

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Python Django Interview Questions


Python Django is a popular web development framework that is based on the Python programming language. It is widely used for creating dynamic and interactive web applications. During the interview process, candidates may be asked about their knowledge and experience with Django. Some common Django interview questions may include understanding of Model-View-Template architecture, familiarity with Django's URL routing system, knowledge about Django forms, and understanding of Django's authentication system. The interviewer may also ask about handling static and media files, deployment, and scalability issues in Django. Overall, the questions are designed to test the candidate's understanding of Django's features and how they can be used to develop robust and efficient web applications.

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1 - What is Django?

Django is a high level, open source Python web framework used for building web applications quickly and efficiently. It follows the Model Template View (MTV) architectural pattern and emphasizes on the reusability and extensibility of components.

2) What are the advantages of using Django?

Django offers a wide range of advantages, including its scalability, high performance, security, built in support for various databases, and an extensive list of pre built packages and libraries. It also has a robust community and detailed documentation, making it easy to learn and use.

3) What is the difference between Django and other web frameworks?

Unlike other web frameworks, Django follows a batteries included approach where all the necessary components are available by default, reducing the need for external libraries. It also has a clean and scalable codebase, making it suitable for large and complex web applications.

4) What is the MTV architectural pattern in Django?

MTV stands for Model Template View and is the architectural pattern used by Django. It separates the data/business logic (Model), presentation logic (Template), and user interface (View), allowing for better organization and maintainability of code.

5) How is data stored in Django?

Django uses Object Relational Mapping (ORM) to map data from the database to Python objects and vice versa. This allows for database agnostic operations, making it easy to switch between different databases.

6) What are the different components of Django?

The main components of Django include the Model, View, Template, URL routing, Forms, and Admin interface. Additionally, it also has built in support for caching, user authentication, and sessions.

7) What is a Django project? 

A Django project is a collection of settings, URLs, and apps that work together to create a web application. It is created using the django admin startproject command.

8) What is a Django app?

A Django app is a self contained module that can be added to a Django project to provide a specific functionality. It has its own models, views, templates, and URLs, making it easy to reuse and maintain.

9) What is the purpose of Django’s admin interface?

Django’s admin interface provides an easy to use and customizable interface for managing the data stored in the database. It allows for CRUD (Create, Read, Update, Delete) operations on models and can be integrated with custom admin actions and permissions.

10) What is a Django migration?

Django migrations are a tool for managing changes to the database schema. They allow for the database schema to be synced with the changes made to models without losing any existing data.

11) How does Django handle URL routing?

Django uses a URL dispatcher to map incoming requests to the appropriate view. The URL dispatcher uses regular expressions to match the requested URL and passes any captured parameters to the corresponding view function.

12) What is the difference between a class based view and a function based view in Django?

Class based views in Django are implemented as subclasses of generic view classes provided by Django, making it easier to reuse code and add functionality. Function based views, on the other hand, are standalone functions that take in a request and return a response.

13) How does Django handle user authentication?

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Django provides built in helpers and functions for user authentication, including the User model, authentication middleware, and password management tools. It also supports optional user registration, password reset, and user permissions.

14) What is a Django template?

A Django template is a text document containing HTML code with placeholders for dynamic content. They allow for a clean separation between the presentation logic (template) and the business logic (view).

15) How is testing done in Django?

Django has a test framework that allows for the creation of unit tests, integration tests, and even browser tests. The tests can be run automatically using the test command or through third party tools such as Selenium.

16) What are Django signals?

Django signals allow for the execution of code in response to certain events, such as when a new object is saved to the database or a user logs in. They are useful for decoupling different components of a Django project and can be used to trigger tasks or send notifications.

17) What is Django REST framework?

Django REST framework is a powerful library that allows for the creation of RESTful APIs in Django. It provides tools for serialization, authentication, and permissions, making it easier to build API endpoints and consume them in web or mobile applications.

18) How does Django handle security?

Django has several built in security features, including cross site request forgery (CSRF) protection, cross site scripting (XSS) protection, and SQL injection protection. It also supports HTTPS/SSL and password hashing for user authentication.

19) Is Django suitable for building large scale applications?

Yes, Django is suitable for building large and complex applications as it offers scalability, high performance, and easy maintenance. Many popular websites and applications, including Instagram and Pinterest, are built using Django.

20) How is database migration handled in Django?

Django offers a easy to use and safe database migration system through the built in migrate command. It allows for the creation of migrations to track changes in the models and applying them to the database without losing any data.


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