Deploying a Python Serverless App with Google Cloud Functions: ASCII Art Example


Serverless computing is revolutionizing the way we build and deploy applications. With serverless architecture, you don’t need to manage servers or infrastructure, allowing you to focus on writing code and delivering features. Google Cloud Functions is a popular serverless platform that allows developers to deploy functions that automatically scale with usage. In this blog post, we’ll guide you through the process of deploying a Python serverless app, an ASCII art generator, using Google Cloud Functions.


Video Tutorial

If you prefer to follow video tutorial, check out my YouTube channel tutorial:

Overview of the ASCII Art Example

The example we’re using is a simple Python serverless app that generates ASCII art from a given input string. The app utilizes the ‘art’ package to generate the ASCII art and Flask for handling HTTP requests. The source code for the example is available in the serverless-examples repository on GitHub.


Setting up the Google Cloud Platform

To deploy the app on Google Cloud Functions, you need a Google Cloud Platform (GCP) account. If you don’t already have one, sign up for a free trial at the GCP Console. Once you’re signed in, create a new project.

Preparing the App for Deployment

First, clone the serverless-examples repository:

git clone

Navigate to the ascii-art folder:

cd serverless-examples/ascii-art

Deploying the App to Google Cloud Functions

Install the Google Cloud SDK by following the official installation guide. Once installed, log in to your Google Cloud account using:

gcloud auth login

Set your active GCP project:

gcloud config set project <your-project-id>

Deploy the function:

gcloud functions deploy hello_ascii --runtime python310 --trigger-http --allow-unauthenticated

Testing the Deployed Function

Once the deployment is complete, Google Cloud will provide a URL for the deployed function. To test it, open the URL in a web browser. You should see the ASCII art representation of the default message, “Hello”.

To use a custom message, add a query parameter to the URL:

Replace REGION, PROJECT_ID, and YourMessage with your Google Cloud region, project ID, and desired message, respectively.



In this blog post, we demonstrated how to deploy a Python serverless app using Google Cloud Functions. With this knowledge, you can now deploy your own serverless apps and harness the power of serverless computing with Google Cloud Platform.

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