Development server and runserver in Django - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What happens when you run python manage.py runserver in a Django project?

When you execute python manage.py runserver inside a Django project folder, what is the expected behavior?

A It deletes all migrations and resets the database.

B It compiles all Python files into bytecode and exits without starting any server.

C It deploys the Django app to a production web server automatically.

D It starts a lightweight web server that listens on port 8000 by default and serves your Django app.

💡 Hint

Think about what a development server is used for in Django.

The runserver command starts a simple web server for development. It listens on port 8000 by default and serves your Django app so you can test it locally.

📝 Syntax

intermediate

Which command correctly starts the Django development server on port 8080?

You want to run the Django development server on port 8080 instead of the default 8000. Which command will do this?

A python manage.py runserver 8080

B python manage.py runserver --port=8080

C python manage.py runserver -p 8080

D python manage.py runserver port=8080

💡 Hint

Check the official Django command syntax for specifying the port.

The correct syntax is python manage.py runserver 8080. The port number is given as a positional argument without flags.

🔧 Debug

advanced

What error occurs if you run python manage.py runserver outside a Django project folder?

You open a terminal in a folder that is not a Django project and run python manage.py runserver. What error will you see?

A FileNotFoundError: manage.py file not found

B ModuleNotFoundError: No module named 'manage'

C django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured.

D CommandError: Unknown command 'runserver'

💡 Hint

Think about what Django needs to find to run the server.

Outside a Django project folder, the manage.py file does not exist, so Python reports a file not found error (often presented as FileNotFoundError for manage.py).

❓ state_output

advanced

What is the output when you run python manage.py runserver 0.0.0.0:8000?

You want your Django development server to be accessible on all network interfaces on port 8000. What output will you see in the terminal after running python manage.py runserver 0.0.0.0:8000?

A Starting development server at http://localhost:8000/

B Starting development server at http://127.0.0.1:8000/

C Starting development server at http://0.0.0.0:8000/

D Error: Invalid IP address 0.0.0.0

💡 Hint

0.0.0.0 means listen on all interfaces.

Using 0.0.0.0 tells Django to listen on all network interfaces. The output shows the server starting at http://0.0.0.0:8000/.

🧠 Conceptual

expert

Why should you NOT use Django's development server (runserver) in production?

Django's runserver is great for development. Why is it not recommended for production use?

A Because it only works on Windows and not on Linux servers.

B Because it is single-threaded and not optimized for handling multiple users or security in production.

C Because it requires a graphical interface to run.

D Because it automatically deletes the database after each request.

💡 Hint

Think about what a production server needs compared to a development server.

The development server is simple and single-threaded. It lacks security features and performance optimizations needed for production environments.