Django project structure walkthrough - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Django settings module in a project.

Django

from django.conf import [1]

Drag options to blanks, or click blank then click option'

Amodels

Burls

Csettings

Dviews

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'urls' instead of 'settings' for configuration import.

Confusing 'models' or 'views' with settings.

The settings module contains all the configuration for the Django project.

2fill in blank

medium

Complete the code to define the main URL configuration file in a Django project.

Django

urlpatterns = [
    path('admin/', admin.site.[1]),
]

Drag options to blanks, or click blank then click option'

Aurls

Bsite

Clogin

Dindex

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'index' or 'login' which are not valid attributes here.

Confusing 'urls' as a method instead of an attribute.

The admin.site.urls is the correct attribute to include admin URLs.

3fill in blank

hard

Fix the error in the Django app's models import statement.

Django

from [1] import models

Drag options to blanks, or click blank then click option'

Adjango.db

Bviews

Cdjango.db.models

Ddjango

Attempts:

3 left

💡 Hint

Common Mistakes

Importing directly from 'views' or 'django' which is incorrect.

Using 'django.db.models' which is not the correct import path.

The correct import for Django models is from django.db.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps app names to their config classes.

Django

app_configs = {app: [1] for app in apps if app [2] 'auth'}

Drag options to blanks, or click blank then click option'

Aapp.capitalize() + 'Config'

Bapp.startswith('auth')

Capp.endswith('auth')

Dapp.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'endswith' instead of 'startswith' for filtering.

Not capitalizing app names correctly.

The comprehension creates config class names by capitalizing app names and appends 'Config'. The filter uses startswith to select apps beginning with 'auth'.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension mapping model names to their fields if the model has more than 3 fields.

Django

model_fields = {model.[1]: model._meta.[2] for model in models if len(model._meta.[3]) > 3}

Drag options to blanks, or click blank then click option'

A__name__

Bfields

Dobjects

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'objects' instead of 'fields' to access model fields.

Not using .__name__ to get the model name.

The model's name is accessed with .__name__. The fields are accessed via _meta.fields. The comprehension filters models with more than 3 fields.

Practice

1. Which file in a Django project is used to run commands like starting the server or creating migrations?

easy

A. manage.py

B. settings.py

C. urls.py

D. wsgi.py

Solution

1. Step 1: Identify the command runner file

   The manage.py file is designed to run commands like starting the server or making migrations.

2. Step 2: Understand other files' roles

   settings.py holds configuration, urls.py routes URLs, and wsgi.py is for deployment interface.

3. Final Answer:

   manage.py -> Option A

4. Quick Check:

   Command runner = manage.py [OK]

Hint: Remember: manage.py runs commands for your project [OK]

Common Mistakes:

• Confusing settings.py as command runner
• Thinking urls.py runs commands
• Assuming wsgi.py runs server commands

2. Which folder typically contains the settings and URL configuration files in a Django project?

easy

A. The app folder

B. The templates folder

C. The project folder

D. The static folder

Solution

1. Step 1: Identify where settings.py and urls.py live

   These files are inside the main project folder, which shares the project name.

2. Step 2: Differentiate folders

   App folders contain app-specific code, templates hold HTML files, static holds CSS/JS/images.

3. Final Answer:

   The project folder -> Option C

4. Quick Check:

   Settings and URLs = project folder [OK]

Hint: Settings and URLs live in the project folder, not apps [OK]

Common Mistakes:

• Thinking settings.py is inside an app folder
• Confusing templates folder with project folder
• Assuming static folder holds config files

3. Given this Django project structure snippet:

myproject/
  manage.py
  myproject/
    settings.py
    urls.py
  blog/
    models.py
    views.py
    urls.py

Which file would you edit to add a new URL route for the blog app?

medium

A. myproject/settings.py

B. blog/urls.py

C. myproject/urls.py

D. manage.py

Solution

1. Step 1: Understand URL routing in Django

   The main project urls.py includes app URLs, but app-specific routes go in the app's urls.py.

2. Step 2: Locate where to add blog routes

   To add blog-specific URLs, edit blog/urls.py where blog views are connected to paths.

3. Final Answer:

   blog/urls.py -> Option B

4. Quick Check:

   App URLs go in app's urls.py [OK]

Hint: Add app URLs inside the app's own urls.py file [OK]

Common Mistakes:

• Adding app URLs directly in project urls.py
• Editing settings.py for URL routes
• Trying to add routes in manage.py

4. You try to run your Django project but get an error: ModuleNotFoundError: No module named 'blog'. Which of these is the most likely cause?

medium

A. You forgot to import models.py in views.py

B. You did not create a urls.py file in the blog app

C. You ran manage.py from the wrong folder

D. You forgot to add the blog app to INSTALLED_APPS in settings.py

Solution

1. Step 1: Understand the error meaning

   The error means Python cannot find the blog app module when loading the project.

2. Step 2: Check common causes

   Not adding the app name to INSTALLED_APPS in settings.py causes this error because Django doesn't recognize the app.

3. Final Answer:

   Forgot to add blog to INSTALLED_APPS -> Option D

4. Quick Check:

   Missing app in INSTALLED_APPS = ModuleNotFoundError [OK]

Hint: Always add new apps to INSTALLED_APPS in settings.py [OK]

Common Mistakes:

• Assuming missing urls.py causes ModuleNotFoundError
• Running manage.py from wrong folder usually gives different error
• Forgetting imports in views.py causes different errors

5. You want to create a new Django app called shop inside your project. Which sequence of actions correctly follows Django project structure best practices?

hard

A. Run python manage.py startapp shop, then add shop to INSTALLED_APPS in settings.py

B. Create a folder named shop manually, then add shop to urls.py

C. Add shop to INSTALLED_APPS first, then run python manage.py startapp shop

D. Run python manage.py startproject shop inside your project folder

Solution

1. Step 1: Create the app properly

   Use python manage.py startapp shop to create the app folder with correct files.

2. Step 2: Register the app in settings

   Add shop to INSTALLED_APPS in settings.py so Django knows about it.

3. Final Answer:

   Run startapp then add to INSTALLED_APPS -> Option A

4. Quick Check:

   Start app then register in settings [OK]

Hint: Always start app with manage.py then add to INSTALLED_APPS [OK]

Common Mistakes:

• Manually creating app folder misses essential files
• Adding app to INSTALLED_APPS before creating it
• Using startproject instead of startapp for apps