Top Django Interview Questions

Django

Django is a Python-based free and open-source web framework, try these interview question and answers to prepare for your next job interview in Django web development.

Q.1 What is the sequence for locating a library or module?

The sequence for locating a library or module is Current directory, usr/lib directory and user home directory

Report This Question

Q.2 What is the output of rendering nodes?

Concatenated output of render function for all nodes.

Report This Question

Q.3 What elements are changed as per locale under internationalization?

The elements that are changed as per locale under internationalization are :

1. Dates

2. Time

3. Error messages

Report This Question

Q.4 What is the associated base template name for adding a form view?

change_form.html is the associated base template name for adding a form view.

Report This Question

Q.5 What function form object does?

A form object :

1. validate a collection of data

2. construct a set of useful error messages

3. generate its own HTML widgets

Report This Question

Q.6 What do you understand by Django?

It is an open-source web application structure written in the language Python. Manifested in a fast-paced newsroom facilitates the rapid development and growth of readily maintainable and reliable websites. It’s a favorite of newcomers and advanced programmers alike.

Report This Question

Q.7 Tell us the features available in Django?

Admin Interface (CRUD) Templating Internationalization Form handling Object-relational mapping (ORM) Testing Framework The session, user management, role-based permissions Fantastic Documentation

Report This Question

Q.8 Name some companies that use Django?

Some of the companies that use Django are DISCUS, YouTube, Instagram, Mozilla Firefox, Reddit, Pinterest, etc.

Report This Question

Q.9 Is Django a high-level web structure or a low-level structure?

Django is a high-level Python web framework that was designed for rapid development and clean, vivid design.

Report This Question

Q.10 How does Django serve?

Django can be split into several components: Models.py file: This file determines the data model by extending the single line of code into whole database tables and supplement a pre-built administration section to handle the content. Urls.py file: It employs a regular expression to captivate URL patterns for machining. Views.py file: It is the focus part of Django. The actual processing occurs in the view.

Report This Question

Q.11 According to you, what is the classic Web developer’s path?

The classic Web developer’s path goes something like this: Draft a Web application from scratch. Write another Web application from scratch. Realize the application from step 1 share much in common with the application from step 2. Refactor the code so that application 1 shares code with application 2. Repeat steps 2-4 several times. Realize you’ve invented a framework.

Report This Question

Q.12 What is the benefit of Django?

One of the biggest benefits of Django is its kind and effective user community. For assistant with any features of Django — from installation to application design, to deployment, to database design, — feel free to ask questions online.

Report This Question

Q.13 What is the Django IRC channel?

The Django IRC channel is where Django users execute out to chat and assist each other in real-time. Connect the fun by logging on to #django on the Freenode IRC network.

Report This Question

Q.14 Why do web developers favor Django?

Web developers employ Django because it: Provides code modules to be split into logical groups, making them adaptable to change Gives an auto-generated web admin module to facilitate website administration Provides a pre-packaged API for common user tasks Allows developers to determine a given function’s URL, etc.

Report This Question

Q.15 Which foundation maintains the Django web framework?

Django web framework is maintained and managed by an independent and non-profit organization called (DSF) Django Software Foundation. The primary goal is to support, promote, and advance the Django Web framework.

Report This Question

Q.16 What do you understand by CRUD?

It has nothing to perform with grime or dirt. It’s a convenient acronym for Create, Read, Update, and Delete. It’s a helpful framework used to suggest developers how to make usable models when building (APIs) application programming interfaces.

Report This Question

Q.17 Tell us about the architecture of Django architecture?

Django architecture includes: Models: It represents your database schema and data structure Views: It constrains what a user perceives, the view retrieves data from relevant models and produce any calculation presented to the data, and relinquish it to the template Templates: It defines how the user views it. It explains how the data collected from the views should be modified or formatted for display on the page Controller: The Django structure and URL parsing

Report This Question

Q.18 How to build a project in Django?

To begin a project in Django, practice the command $django-admin.py and then apply the command: Project _init_.py manage.py settings.py urls.py

Report This Question

Q.19 Does Django have some drawbacks?

Django’s disadvantages involve: Its monolithic size makes it inappropriate for smaller projects Everything connects on Django’s (Object-Relational Mapping) ORM Everything must be explicitly defined due to a shortage of convention

Report This Question

Q.20 Which language primarily practice for Django?

Django is formulated in 100% pure Python code, so we will need to establish Python on our system. Django needs Python 2.3 or higher. If we are on Linux or Mac OS X, we probably already have Python installed.

Report This Question

Q.21 How to Install Django with Virtualenv?

Virtualenv is a python environment constructor. It is practiced to create separated python environments. We can determine the version of python that will be fixed in the virtualenv environment. This is very helpful for developers, they can work and develop an application with various python versions and diverse environments on one OS. Virtualenv is available on the PyPI repository – we can install it with the pip command – pip install virtualenv.

Report This Question

Q.22 What are the disadvantages of Django?

Django’s modules are large. It is entirely based on the Django ORM. Segments are expanded together.

Report This Question

Q.23 In Django’s circumstances, what’s the distinction between a project and an app?

The project incorporates the whole application, while an app is a module or application within the project that administers with 1 dedicated need. So, a project consists of many apps, while an app features various projects.

Report This Question

Q.24 What are the heritage styles in Django?

There are 3 potential estate styles in Django:

1) Abstract base classes: This is used when we only want the parent's class to hold data that we don't want to type out for each child model.

2) Multi-table Inheritance: This style is employed if we are sub-classing an existing model and require each model to have its database table.

3) Proxy models: This style is utilized, if we only desire to change the Python level behavior of the model, without modifying the model's fields.

Report This Question

Q.25 Define a model in Django.

A model includes all the mandatory fields and attributes of the stored data. They are a single, definitive resource of data and information regarding the data.

Report This Question

Q.26 What do the Django templates include?

A template is a simple text file. It can make any text-based form like CSV, XML, HTML, etc. A template includes variables that get replaced with values when the template is evaluated and tags (%tag%) that control the logic of the template.

Report This Question

Q.27 Explain how we can set up static files in Django?

There are 3 main things needed to set up static files in Django Set STATIC_ROOT in settings.py run manage.py collect static set up a Static Files entry on the PythonAnywhere web tab

Report This Question

Q.28 Which database engines support Django?

Django supports many database engines: PostgreSQL SQLite 3 MySQL

Report This Question

Q.29 Comment on PostgreSQL?

Django maintains PostgreSQL 9.0 and higher. It entails the performance of Psycopg2 2.0.9 or higher. Django requires some parameters for its database connections:

client_encoding:
‘UTF8’ default_transaction_isolation:
‘read committed’ by default, or the value set in the connection options timezone:
‘UTC’ when USE_TZ is True, the value of TIME_ZONE otherwise.

Report This Question

Q.30 What is Collation Settings?

The collation setting for a column establishes the order in which data is distributed as well as what strings correspond as equal. It can be set on a database-wide level and also per-table and per-column.

Report This Question

Q.31 Explain the application of the session framework in Django?

In Django, the session framework enables us to store and retrieve arbitrary data on a per-site-visitor basis. It saves data on the server-side and abstracts the receiving and sending of cookies. The session can be performed through a piece of middleware.

Report This Question

Q.32 Is Django a (CMS) content management system?

No, Django is not a CMS (content management system). Rather, it is a Web framework and a programming device that makes us able to make websites.

Report This Question

Q.33 Describe Django’s Response Cycle/Request.

Beginning the process off, the Django server accepts a request. The server then looks for a matching URL in the URL patterns established for the project. If the server can’t locate a matching URL, it originates a 404-status code. If the URL counterparts, it produces the corresponding code in the view file affiliated with the URL and transmits a response.

Report This Question

Q.34 How to use the file-based sessions?

We have to set SESSION_ENGINE settings to “django.contrib.sessions.backends.file” to use file-based session.

Report This Question

Q.35 What is some common practice of middlewares in Django?

Some regulation of middlewares in the Django is: Session management, Cross-site request forgery protection Use authentication Content Gzipping, etc.

Report This Question

Q.36 Mention what command line can be practiced to load data into Django?

To load data into Django, we have to practice the command line Django-admin.py load data. The command line will search the data and loads the contents of the named fixtures into the database.

Report This Question

Q.37 What is the method of Django-admin.py and manage.py?

Django-admin.py: It is Django's command-line convenience for organizational tasks. Manage.py: It is an automatically made file in every Django project. It is a thin wrapper around the Django-admin.py. It has the following usage: It puts your project's package on the sys.path. It sets the DJANGO_SETTING_MODULE environment variable to points to your project's setting.py file.

Report This Question

Q.38 Explain the Django Admin interface.

Django comes outfitted with a completely customizable, built-in admin interface. This portal lets developers view and make modifications to all the data residing in the database that comprises registered apps and models. The model must be expressed in the admin.py file to use a database table with the admin interface.

Report This Question

Q.39 Comment on Django’s Time Zone.

Django incorporates a TIME_ZONE framework that defaults to America/Chicago. This apparently isn’t where we live, so we might want to change it in the settings.py.

Report This Question

Q.40 What do you understand by the signals in Django?

Signals are pieces of code that include data and information about what is happening. A dispatcher is practiced to transmitting the signals and listen for those signals.

Report This Question

Q.41 How do we check which version of Django we have installed on our system?

We can verify the version by opening the command prompt and entering the command: Python-m Django–version

Report This Question

Q.42 What is URLconf?

A URLconf is like a table of contents for the Django-powered website. Fundamentally, it’s a mapping among URLs and the view functions that should be called for those URLs.

Report This Question

Q.43 What is Regular Expression?

Regular expressions or we can say regexes are a condensed way of defining patterns in text. While Django URLconfs support arbitrary regexes for persuasive URL-matching capacity, we will apparently use only a few regex patterns in practice.

Report This Question

Q.44 Describe the migration in Django and how we can do it in SQL?

Migration in Django is to create changes to the models such as deleting a model, supplementing a field, etc. into the database schema. There are various commands we can use to interact with migrations. Migrate makemigrations Sqlmigrate

Report This Question

Q.45 Explain the Django Rest Framework.

The (DRF) Django Rest Framework is a structure that helps us quickly make RESTful APIs. They are good for web applications because of low bandwidth utilization.

Report This Question

Q.46 What are two significant parameters in signals?

Receiver: It defines the callback function correlated to the signal. Sender: It specifies a particular sender from where a signal is received.

Report This Question

Q.47 Does Django uphold multiple-column primary keys?

No, Django supports only single-column primary keys.

Report This Question

Q.48 What are ‘views’?

Django views subserve the determination of encapsulation. They encapsulate the logic liable for processing a user’s request and for responding to the response back to the user. Views in Django either restore an HttpResponse or elevate an exception such as Http404. Further, HttpResponse includes the objects that include the content that is to be distributed to the user. Views can also be utilized to accomplish tasks such as read records from the database, generate a PDF file, being representative of the templates, etc.

Report This Question

Q.49 What do you understand by static files?

Static files in Django are those files that obey the direction of additional files like the images, CSS, or JavaScript files. These files are accomplished by Django.contrib.staticfiles. These files are generated within the project app register by making a subdirectory named static.

Report This Question

Q.50 What is mixin?

Mixin is a type of various inheritance wherein we can blend behaviors and attributes of more than 1 parent class. Mixins give a good way to reuse code from various classes.

Report This Question

Q.51 Explain the caching approaches of Django?

Caching essentially means saving the output of an expensive estimation in order to avert performing the same calculation again.

Report This Question

Q.52 What do you understand by the csrf_token?

The csrf_token is practiced for protection against Cross-Site Request Forgeries. This type of attack takes place when a malicious website includes a link, some JavaScript, or a form whose purpose is to execute some action on the website by utilizing the login credentials of a genuine user.

Django

Get Govt. Certified

Are you an expert ?