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aws serverless application model (aws sam) is an open-source framework for building serverless applications. it extends aws cloudformation to provide a simplified way of defining the amazon api gateway apis, aws lambda functions, and amazon dynamodb tables needed by your serverless application. in this tutorial, we'll guide you through creating a simple serverless application using aws sam and python.
before you begin, make sure you have the following prerequisites installed:
open your terminal and navigate to the directory where you want to create your project. run the following commands:
this will create a new aws sam project with a python 3.8 runtime.
open the your-project-name/hello_world directory and edit the app.py file. replace the contents with the following python code:
this simple lambda function responds with a json message containing "hello, world!".
open the your-project-name/template.yaml file and replace its contents with the following aws sam template:
this template defines a lambda function (helloworldfunction) triggered by an api gateway endpoint.
in the root directory of your project, run the following commands:
follow the prompts during the guided deployment to configure your stack. once deployed, aws sam will provide you with the api gateway endpoint.
use the provided api gateway endpoint to test your serverless function:
you should receive a response similar to:
congratulations! you've successfully created a simple serverless application using aws sam and python.
feel free to explore more aws sam features and customize your application based on your requirements.
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