The Google Cloud Functions emulator for Python 3 helps you develop Google Cloud Functions using Python running locally on your workstation. Working locally is much faster than deploying code to Google, waiting for it to finish deploying, getting an error, and finding the error message in the the Stackdriver logs.

Clone the repo and change to the directory. Run the following:

source env/bin/activate
pip install -r requirements.txt

Copy env.sh.dist to env.sh and edit the file to define any environment variables that your function will need in this file. This is equivalent to setting environment variables in the GCP Console or using the command:

gcloud functions deploy FUNCTION_NAME --set-env-vars FOO=bar

Once env.sh is configured, run the emulator:

source env.sh
flask run

To trigger the function, navigate to http://127.0.0.1:5000/route1 in a browser or with a client such as curl, ARC, or Postman.

Because we set FLASK_ENV=development, Flask will watch for changes to your code, and reload automatically. Error messages are displayed in the terminal and in the browser.

Define your trigger URLs as routes in framework.py. That's the only change you should have to make in this file.

Define your functions in another file (module ), and import them into framework.py There is an example function in file main.py (there is nothing magic about the name main.py)

This software is released without any warranty or promise of support, with the goal of helping other Python developers make use of Google Cloud Functions. If you are looking for commercial support, please contact [email protected] or visit https://rootwork.it/contact-rootwork/

I am neither an employee nor contractor of Google, and I have no affiliation with Google Cloud Platform. All copyrights and trademarks mentioned in the source code and documentation are the property of Google, and are used here under the doctrine of "fair use."

The official, Google-supported Cloud Functions Emulator only supports Node.js, and can be found here: https://github.com/GoogleCloudPlatform/cloud-functions-emulator