Latest Django Interview Questions

Python Django interview questions and answers

Django is a free and open-source web framework written in Python and Based on the model-view-template architectural pattern. Django web framework is a set of components that help you to develop websites earlier and easier.

While building a website, you always need a similar set of components: a way to handle user authentication (signing up, signing in, signing out), a management panel for your website.

Fortunately, other people long ago noticed that the same problem is faced by developers while making a website, so they teamed up and created frameworks that give you ready-made components to use and Django is one of them.

Top Django interview questions and answers are given below.

#1 Does Django Follow Architectural pattern?

Yes, Django follows Model-View-Controller (MVC) architectural pattern.

#2 When QuerySets are evaluated in Django?

In Django, a QuerySet can be evaluated in Iteration, Slicing, Pickling/Caching, repr(),len(), list() and bool().

#3 How to get current page URI in Django template.

You can use {{ request.path }} and {{ request.get_full_path }} to get current page URI in Django template

#4 What are signals in Django?

Signal are inbuilt utility in Django. They allow to execute some piece of code based on some action or event is occurred in framework something like a new user register, on delete of a record.
Below is the list of some inbuilt signal in Django.
  • pre_save and post_save.
  • pre_delete and post_delete
  • pre_request and post_request
  • pre_request and post_request

#5 How can you set up static files in Django?

Basically, we require three main things to set up static files in Django:

1) Set STATIC_ROOT in settings.py

2) Run manage.py collect static

3) Set up a Static Files entry on the PythonAnywhere web tab

#6 What does Of Django Field Class types do?

Following points are specified by the Django Field Class type: –

  • It specifies the database column type.
  • It also specifies the default HTML widget which is availed while we render the form field.
  • The requirements of the minimal validation which is used in Django admin is also specified by the field class.

#7 How to check installed version of Django?

By running below command on Terminal.You can check installed version of Django Framework.

py -m django --version

#8 Explain mixins in Django.

A mixin is a special kind of multiple inheritances in Python. There are two main situations where mixins are used:

  • You want to provide a lot of optional features for a class.
  • You want to use one particular feature in a lot of different classes.

Read More from https://stackoverflow.com/questions/533631/what-is-a-mixin-and-why-are-they-useful

#9 What is some typical usage of middlewares in Django?

Middleware is a function that acts on or transforms a request/response before/after it passes through the view layer (e.g. adding the user object to the request)
Some usage of middlewares in Django is:
  • It can be used for Session management,
  • User authentication can be done with the help of this.
  • It helps in Cross-site request forgery protection
  • Content Gzipping, etc.

#10 How does Django work?

Django can be broken into several components:

  • Models.py file: This file defines your data model by extending your single code line into full database tables and add a pre-built administration section to manage content.
  • Urls.py file: It uses a habitual expression to confine URL patterns for processing.
  • Views.py file: It is the main part of Django. The actual processing happens in view.

#11 When and who create Django?

According to https://en.wikipedia.org/wiki/Django_(web_framework), Django was created in the fall of 2003, when the web programmers at the Lawrence Journal-World newspaper, Adrian Holovaty and Simon Willison, began using Python to build applications. It was released publicly under a BSD license in July 2005. The framework was named after guitarist Django Reinhardt.

#12 How to install the development version of Django

Follow the below steps to Install the development version of Django Framework.

    • Check out Django’s main development branch
$ git clone https://github.com/django/django.git
    • Make sure that the Python interpreter can load Django’s code. The most convenient way to do this is to use virtualenv, virtualenvwrapper, and pip.
    • After setting up and activating the virtualenv, run the following command:
$ pip install -e django/

Source:https://docs.djangoproject.com/en/2.0/topics/install/

#13 What does the Django templates contain?

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

#14 Is Django stable or not?

Of course, Django is stable. Most of the companies are using it.

#15 How a request is processed in Django?

In Django whenever a request is made by a user, it goes through the following steps:

  • Django determines the root URLconf module to use. Ordinarily, this is the value of the ROOT_URLCONF setting, but if the incoming HttpRequest object has a urlconf attribute (set by middleware), its value will be used in place of the ROOT_URLCONF setting.
  • Django loads that Python module and looks for the variable urlpatterns. This should be a Python list of django.urls.path() and/or django.urls.re_path() instances.
  • Django runs through each URL pattern, in order, and stops at the first one that matches the requested URL.
  • Once one of the URL patterns matches, Django imports and calls the given view, which is a simple Python function (or a class-based view). The view gets passed the following arguments:
    • An instance of HttpRequest.
    • If the matched URL pattern returned no named groups, then the matches from the regular expression are provided as positional arguments.
    • The keyword arguments are made up of any named parts matched by the path expression, overridden by any arguments specified in the optional kwargs argument to django.urls.path() or django.urls.re_path().
    • If no URL pattern matches, or if an exception is raised during any point in this process, Django invokes an appropriate error-handling view.

Latest Posts.

Python Tutorials
Python popularity: Why and how PYTHON is growing Like Elephant

Python has been around for a couple of decades and the codes written in this entire time has been re...

Python Tutorials
Facts You Must Know About DJANGO Python

Facts You Must Know About DJANGO Python: DJANGO- THE FRAMEWORK BY PYTHON Django is a free and open s...

Python Tutorials
Python vs Swift: Which one is better?

You have to be 'Swift' to catch up with a 'Python' in the real world, isn't it? How else would you m...

Ask a Question