To install Boto3 on your computer, go to your terminal and run the following:
$ pip install boto3
You’ve got the SDK. But, you won’t be able to use it right now, because it doesn’t know which AWS account it should connect to.
To make it run against your AWS account, you’ll need to provide some valid credentials. If you already have an IAM user that has full permissions to S3, you can use that user’s credentials (their access key and their secret access key) without needing to create a new user. Otherwise, the easiest way to do this is to create a new AWS user and then store the new credentials.