Installation

pip install flask-aws-lambda

Usage

This module works pretty much just like Flask. This allows you to run and develop this applicaiton locally just like you would in Flask. When ready deploy to Lambda, and configure the handler as:

my_python_file.app

Here is an example of what my_python_file.py would look like:

import json
from flask import request
from flask_aws_lambda import FlaskAwsLambda


app = FlaskAwsLambda(__name__)


@app.route('/foo', methods=['GET', 'POST'])
def foo():
    data = {
        'form': request.form.copy(),
        'args': request.args.copy(),
        'json': request.json
    }
    return (
        json.dumps(data, indent=4, sort_keys=True),
        200,
        {'Content-Type': 'application/json'}
    )

if __name__ == '__main__':
    app.run(debug=True)

Flask-RESTful

Nothing special here, this module works without issue with Flask-RESTful as well.

API Gateway

Configure your API Gateway with a {proxy+} resource with an ANY method. Your “Method Response” should likely include an application/json “Response Body for 200” that uses the Empty model.

Deploying

Consider using AWS Serverless Application Model (AWS SAM).

Lambda Test Event

If you wish to use the “Test” functionality in Lambda for your function, you will need a “API Gateway AWS Proxy” event. Check the event JSON objects in the events folder.

To update your test event, click “Actions” -> “Configure test event”.