Pastebin

import boto3

# Set up connection to S3
s3 = boto3.client('s3')

# Set up S3 bucket and file names
bucket_name = 'my-s3-bucket'
file_name = 'data.csv'

# Download the file from S3
s3.download_file(bucket_name, file_name, 'data.csv')

# Open the file and process the data
with open('data.csv', 'r') as f:
    data = f.read()
    processed_data = process_data(data)

# Save the processed data back to S3
s3.upload_file('processed_data.csv', bucket_name, 'processed_data.csv')