A way to ship code in small increments and iterations is by using a Continuous Integration and Continuous Deployment, or CI/CD, pipeline. In this tutorial we’ll go through all the steps in setting up such a pipeline using free and hosted services. From start to end this tutorial shows you in 9 steps how to:

• Write a little Python program (not Hello World)
• Add some automated tests for the program
• Push your code to GitHub
• Setup Travis CI to continuously run your automated tests
• Setup Better Code Hub to continuously check your code quality
• Turn the Python program into a web app
• Create a Docker image for the web app
• Push the Docker image to Docker Hub
• Deploy the Docker image to Heroku