CI/CD pipeline for Flask - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does CI/CD stand for in software development?

CI/CD stands for Continuous Integration and Continuous Delivery (or Continuous Deployment). It means automatically testing and delivering code changes to users quickly and safely.

beginner

Why use a CI/CD pipeline for a Flask application?

A CI/CD pipeline helps catch errors early, speeds up delivery, and makes sure your Flask app updates smoothly without breaking for users.

beginner

Name a common tool used for running automated tests in a Flask CI pipeline.

Pytest is a popular tool to run automated tests for Flask applications during the CI process.

intermediate

What is the role of Docker in a CI/CD pipeline for Flask?

Docker packages your Flask app and its environment into a container, making it easy to test and deploy consistently across different machines.

intermediate

Explain the difference between Continuous Delivery and Continuous Deployment.

Continuous Delivery means your code is always ready to be released but needs manual approval. Continuous Deployment means code changes are automatically released to users after passing tests.

What is the first step in a typical CI/CD pipeline for a Flask app?

A Push code to the repository

B Build the Docker image

C Run automated tests

D Deploy to production

The pipeline usually starts when code is pushed to the repository, triggering the next steps automatically.

Which file commonly defines the steps of a CI/CD pipeline in GitHub Actions?

A app.py

B requirements.txt

C Dockerfile

D .github/workflows/*.yml

GitHub Actions workflows are defined in YAML files inside the .github/workflows directory.

What command installs dependencies listed in requirements.txt for a Flask app?

A pip install -r requirements.txt

B python app.py

C docker build .

D pytest

The command 'pip install -r requirements.txt' installs all Python packages needed by the app.

In a CI/CD pipeline, what does 'automated testing' help prevent?

A Manual code writing

B Slow internet

C Code errors and bugs

D Server crashes unrelated to code

Automated tests check code for errors and bugs before deployment.

Which tool can be used to deploy a Flask app to a cloud service in a CI/CD pipeline?

A npm

B Heroku CLI

C Git

D pytest

Heroku CLI is used to deploy apps to the Heroku cloud platform.

Describe the main stages of a CI/CD pipeline for a Flask application.

Think about what happens from writing code to making it live.

Explain how Docker helps in deploying a Flask app in a CI/CD pipeline.

Imagine packing your app in a box that works anywhere.