Development server with debug mode in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the Flask development server.

Flask

if __name__ == '__main__':
    app.run([1]=True)

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

Aport

Bhost

Cthreaded

Ddebug

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'host' or 'port' instead of 'debug' to enable debug mode.

Forgetting to set any argument, so debug mode stays off.

The debug=True argument enables debug mode in Flask's development server.

2fill in blank

medium

Complete the code to run the Flask app on all network interfaces.

Flask

if __name__ == '__main__':
    app.run(host=[1])

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

A'127.0.0.1'

B'0.0.0.0'

C'localhost'

D'192.168.1.1'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'localhost' or '127.0.0.1' which only allow local access.

Using a random IP that might not be assigned to the machine.

Using host='0.0.0.0' makes the server listen on all interfaces, allowing access from other devices.

3fill in blank

hard

Fix the error in the code to enable debug mode correctly.

Flask

if __name__ == '__main__':
    app.run(debug=[1])

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

ATrue

B'False'

C1

D'True'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing 'True' as a string instead of the boolean True.

Passing 1 which works but is less clear than True.

The debug parameter expects a boolean value, not a string.

4fill in blank

hard

Fill both blanks to run the Flask app on port 8080 with debug mode on.

Flask

if __name__ == '__main__':
    app.run(port=[1], debug=[2])

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

A8080

B5000

CTrue

DFalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using the default port 5000 instead of 8080.

Setting debug to False or as a string.

Port 8080 is a common alternative port, and debug=True enables debug mode.

5fill in blank

hard

Fill all three blanks to run the Flask app on all interfaces, port 3000, with debug mode enabled.

Flask

if __name__ == '__main__':
    app.run(host=[1], port=[2], debug=[3])

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

A'0.0.0.0'

B3000

CTrue

D'localhost'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'localhost' instead of '0.0.0.0' for host.

Using port 5000 instead of 3000.

Setting debug to 'True' as a string.

Host '0.0.0.0' listens on all interfaces, port 3000 is specified, and debug=True enables debug mode.