Gunicorn for production serving in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Gunicorn's WSGI server to run a Flask app.

Flask

from flask import Flask
app = Flask(__name__)

if __name__ == '__main__':
    from [1] import WSGIApplication
    http_server = WSGIApplication('__main__:app')
    http_server.cfg.set('bind', '0.0.0.0:8000')
    http_server.run()

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

Agunicorn.workers

Bgunicorn

Cgunicorn.app.wsgiapp

Dgunicorn.http

Attempts:

3 left

💡 Hint

Common Mistakes

Importing from 'gunicorn' directly instead of the correct submodule.

Using 'gunicorn.http' which is unrelated to WSGI server.

Trying to import from 'gunicorn.workers' which is for worker classes.

The correct import for Gunicorn's WSGI server in this context is from 'gunicorn.app.wsgiapp'.

2fill in blank

medium

Complete the command to start a Flask app with Gunicorn on port 5000.

Flask

gunicorn -b 0.0.0.0:5000 [1]:app

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

Awsgi

Bmyapp

Capp

Dserver

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'app' as the module name when it's usually the variable name.

Using 'server' which is not the module name.

Forgetting to specify the module before ':app'.

The Gunicorn command requires the Python module name where the Flask app instance 'app' is defined. Commonly, this is 'wsgi'.

3fill in blank

hard

Fix the error in the Gunicorn command to run with 4 worker processes.

Flask

gunicorn -w [1] myapp:app

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

Atwo

B4

Cfour

Dworker4

Attempts:

3 left

💡 Hint

Common Mistakes

Using words like 'four' instead of the number 4.

Using invalid strings like 'worker4'.

Using spelled-out numbers causing syntax errors.

The '-w' option expects a number for workers, so '4' is correct. Words like 'four' or 'two' cause errors.

4fill in blank

hard

Fill both blanks to create a Gunicorn command that binds to localhost on port 8080 and uses 2 workers.

Flask

gunicorn -w [2] -b 127.0.0.1:8080 [1]

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

Amyapp:app

Bapp:myapp

C2

D4

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping module and app names.

Using wrong number of workers.

Incorrect binding address format.

The module and app instance is 'myapp:app' and the number of workers is '2'.

5fill in blank

hard

Fill all three blanks to create a Gunicorn command that runs 'server:app' with 3 workers and logs to 'gunicorn.log'.

Flask

gunicorn -w [2] --log-file [3] [1]

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

Aserver:app

B3

Cgunicorn.log

Dapp:server

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping module and app names.

Using wrong number of workers.

Forgetting to specify the log file.

The correct module and app is 'server:app', workers count is '3', and log file is 'gunicorn.log'.