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# Amazon SNS code examples for the SDK for Python

## Overview

Shows how to use the AWS SDK for Python (Boto3) to work with Amazon Simple Notification Service (Amazon SNS).

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*Amazon SNS is a web service that enables applications, end-users, and devices to instantly send and receive notifications from the cloud.*

## ⚠ Important

* Running this code might result in charges to your AWS account. For more details, see [AWS Pricing](https://aws.amazon.com/pricing/?aws-products-pricing.sort-by=item.additionalFields.productNameLowercase&aws-products-pricing.sort-order=asc&awsf.Free%20Tier%20Type=*all&awsf.tech-category=*all) and [Free Tier](https://aws.amazon.com/free/?all-free-tier.sort-by=item.additionalFields.SortRank&all-free-tier.sort-order=asc&awsf.Free%20Tier%20Types=*all&awsf.Free%20Tier%20Categories=*all).
* Running the tests might result in charges to your AWS account.
* We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see [Grant least privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege).
* This code is not tested in every AWS Region. For more information, see [AWS Regional Services](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services).

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## Code examples

### Prerequisites

For prerequisites, see the [README](../../README.md#Prerequisites) in the `python` folder.

Install the packages required by these examples by running the following in a virtual environment:

```
python -m pip install -r requirements.txt
```

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### Single actions

Code excerpts that show you how to call individual service functions.

* [Create a topic](sns_basics.py#L31) (`CreateTopic`)
* [Delete a subscription](sns_basics.py#L152) (`Unsubscribe`)
* [Delete a topic](sns_basics.py#L66) (`DeleteTopic`)
* [List the subscribers of a topic](sns_basics.py#L108) (`ListSubscriptions`)
* [List topics](sns_basics.py#L49) (`ListTopics`)
* [Publish an SMS text message](sns_basics.py#L166) (`Publish`)
* [Publish to a topic](sns_basics.py#L190) (`Publish`)
* [Set a filter policy](sns_basics.py#L130) (`SetSubscriptionAttributes`)
* [Subscribe an email address to a topic](sns_basics.py#L80) (`Subscribe`)

### Scenarios

Code examples that show you how to accomplish a specific task by calling multiple
functions within the same service.

* [Create and publish to a FIFO topic](sns_fifo_topic.py)

### Cross-service examples

Sample applications that work across multiple AWS services.

* [Create an Amazon Textract explorer application](../../cross_service/textract_explorer)

## Run the examples

### Instructions


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Run this example at a command prompt with the following command.

```
python sns_basics.py
``` 
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#### Create and publish to a FIFO topic

This example shows you how to create and publish to a FIFO Amazon SNS topic.


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Start the example by running the following at a command prompt:

```
python sns_fifo_topic.py
```


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### Tests

⚠ Running tests might result in charges to your AWS account.


To find instructions for running these tests, see the [README](../../README.md#Tests)
in the `python` folder.


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## Additional resources

* [Amazon SNS Developer Guide](https://docs.aws.amazon.com/sns/latest/dg/welcome.html)
* [Amazon SNS API Reference](https://docs.aws.amazon.com/sns/latest/api/welcome.html)
* [SDK for Python Amazon SNS reference](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/sns.html)

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SPDX-License-Identifier: Apache-2.0