Overview

Duration: 1

Hey there!

This codelab will walk you through the process of creating a simple "Hello World" application using Python Flask and deploying it to Google Cloud Run.

Requirements

Duration: 2

In order to follow this codelab, you'll need the following:

A Google Cloud Platform account.
Google Cloud CLI installed and initialized.
Python installed locally.

Setting Up Your Google Cloud Account

Duration: 10

Head over to Google Cloud Platform and create an account.
Enable billing
Create a new project, let's name it project-x.

Install Google Cloud CLI

Duration: 5

Follow the official guide to install the Google Cloud CLI: Installing Google Cloud SDK.

Create and Run the Flask Application

Duration: 15

Create a file named main.py with the following content:

from flask import Flask
import os

app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

if __name__ == '__main__':
    app.run(debug=True, host="0.0.0.0", port=int(os.environ.get("PORT", 8080)))

Install Flask:

pip install Flask

Create a Python virtual environment and activate it:

python3 -m venv .venv
source .venv/bin/activate

Set up a new directory for your project:

mkdir hello-world-cloud-run
cd hello-world-cloud-run

Running the App Locally

Duration: 2

Open your web browser and go to http://localhost:8080. You should see the "Hello, World!" message.

Run your application locally:

python main.py

Deploy to Google Cloud Run

Duration: 5

Wait for the deployment to complete. You will receive a URL where your application is live.

Deploy your application to Google Cloud Run:

gcloud run deploy

Generate the requirements.txt file

pip list --format=freeze > requirements.txt

Conclusion

Duration: 1

Congratulations! You've just built and deployed a simple application on Google Cloud Run using Python and Flask!

What's Next?

Duration: 1

Experiment with adding more routes and functionalities to your Flask application.
Learn more about managing and monitoring your applications on Google Cloud Run.
Explore other Google Cloud services that can enhance your application.