DJANGO · EASY CODEX

Django Interview Questions — Easy

Q: Explain the MVT architecture.

Model: data layer - Python classes mapping to database tables (models.Model), owning validation and relationships. View: request/response logic - receives HttpRequest, queries models, returns HttpResp

Q: What is the role of settings.py?

Central configuration module: INSTALLEDAPPS, database backends (DATABASES), middleware order, templates config, static/media roots, auth validators, i18n/timezone. Environment separation handled by re

Q: What is manage.py used for?

Project-specific CLI wrapper around django-admin: runserver, migrate, makemigrations, shell, createsuperuser, test, collectstatic. Sets DJANGOSETTINGSMODULE so commands execute within your project con

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Q1What is Django and what are its core design philosophies?

A high-level Python web framework enabling rapid development of secure, maintainable sites.
Core philosophies: batteries-included (ORM, auth, admin, forms shipped), DRY, explicit is better than implicit, loose coupling (apps are pluggable), security by default (CSRF/XSS/clickjacking protections on).
Follows the MVT pattern (Model-View-Template) - Django's flavor of MVC where templates play the "view" role and views act as controllers.

Q2Explain the MVT architecture.

Model: data layer - Python classes mapping to database tables (models.Model), owning validation and relationships.
View: request/response logic - receives HttpRequest, queries models, returns HttpResponse (function-based or class-based).
Template: presentation layer - HTML with Django Template Language ({{ variable }}, {% tag %}). Flow: URL dispatcher routes to view → view pulls data via models → renders template → response. Contrast with MVC: there is no separate controller; the framework's URLconf + view fill that role.

Q3What is the role of settings.py?

Central configuration module: INSTALLED_APPS, database backends (DATABASES), middleware order, templates config, static/media roots, auth validators, i18n/timezone.
Environment separation handled by reading env vars (os.environ.get) or splitting modules (base/dev/prod).
Secrets never hardcoded - pulled from environment.
Settings are import-once Python - anything can be configured programmatically, which enables dynamic overrides in tests (override_settings).

Q4What are apps in Django?

Self-contained modules doing one thing ("blog", "accounts") - each with models/views/admin/tests migrations.
Registered via INSTALLED_APPS; Django discovers models, signals, template tags automatically.
Design goal: reusable/pluggable - a well-built app can drop into other projects with minimal coupling.
Rule of thumb: new feature area ⇒ new app, not a bigger monolithic app. Cross-app imports go through services or explicit imports, avoiding circular dependencies.

Q5What is manage.py used for?

Project-specific CLI wrapper around django-admin: runserver, migrate, makemigrations, shell, createsuperuser, test, collectstatic.
Sets DJANGO_SETTINGS_MODULE so commands execute within your project context.
Custom commands: add management/commands/mytask.py inside an app → callable as python manage.py mytask. Interview tip: mention inspectdb (reverse-engineer models from legacy DB) as a lesser-known gem.

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