Context lifecycle execution in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Flask app instance.

Flask

from flask import Flask
app = Flask([1])

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

Aapp

B__name__

CFlask

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string like 'app' instead of __name__

Passing None which causes errors

The Flask app instance requires the current module name, which is given by __name__.

2fill in blank

medium

Complete the code 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"/home"

B"home"

C"/"

D"index"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'home' without a slash

Using '/home' which is a different URL

The root URL path is "/" for the home page route.

3fill in blank

hard

Fix the error in the code to run the Flask app only when the script is executed directly.

Flask

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

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

A__name__

Bapp.name

Cmain

Dapp.__main__

Attempts:

3 left

💡 Hint

Common Mistakes

Using app.name which is incorrect

Using 'main' without underscores

The special variable __name__ equals '__main__' when the script runs directly.

4fill in blank

hard

Fill both blanks to access the request method inside a route function.

Flask

from flask import [1]

@app.route('/submit', methods=['POST'])
def submit():
    if [2].method == 'POST':
        return 'Form submitted!'

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

Arequest

BResponse

DFlask

Attempts:

3 left

💡 Hint

Common Mistakes

Importing Response instead of request

Using Flask instead of request

You import request from Flask and use it to check the HTTP method.

5fill in blank

hard

Fill all three blanks to create a context manager that pushes and pops the app context.

Flask

with app.[1]() as [2]:
    print([3].app.name)

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

Aapp_context

Bctx

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'request' instead of 'ctx' for the context variable

Not using app_context() method

The app_context() method creates a context manager. Capture the context variable as ctx and access the app name with ctx.app.name.