What is Flask - Interactive Quiz & Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flask class from the flask package.

Flask

from flask import [1]

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

Arequest

Bflask

Capp

DFlask

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'flask' instead of 'Flask'.

Importing 'app' which is not a class.

Confusing 'request' with 'Flask'.

You need to import the Flask class to create a Flask app.

2fill in blank

medium

Complete the code to create a Flask app instance named 'app'.

Flask

app = [1](__name__)

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

AApp

BFlask

CApplication

DServer

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Application' or 'App' which are not valid class names.

Using lowercase 'flask' which is incorrect here.

The Flask app instance is created by calling the Flask class with __name__ as argument.

3fill in blank

hard

Fix the error in the route decorator to define a route for the home page.

Flask

@app.route([1])
def home():
    return "Hello, Flask!"

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

A'/'

B'home'

C"/"

D"home"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'home' instead of '/' as the route path.

Using double quotes instead of single quotes is okay but here single quotes are expected.

Missing quotes around the path.

The route decorator needs the URL path as a string. The home page is '/'.

4fill in blank

hard

Fill both blanks to run the Flask app only when this script is executed directly.

Flask

if __name__ == [1]:
    app.run([2])

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

A"__main__"

BTrue

CFalse

Ddebug=True

Attempts:

3 left

💡 Hint

Common Mistakes

Using True or False instead of the string '__main__' in the if condition.

Not passing debug=True to app.run() for development.

The special variable __name__ equals "__main__" when the script runs directly. app.run(debug=True) starts the server with debug mode on.

5fill in blank

hard

Fill all three blanks to create a route '/about' that returns 'About page'.

Flask

@app.route([1])
def [2]():
    return [3]

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

A'/about'

Babout

C"About page"

D'About page'

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes for the return string is okay but here single quotes are expected.

Naming the function with capital letters or spaces.

Missing quotes around the route path.

The route decorator needs the path '/about'. The function name is about. The return value is the string 'About page'.