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You can create a directory structure in S3 using Python and boto3 by the following steps:

1. Import the boto3 library:

import boto3

1. Create an S3 client:

s3 = boto3.client('s3')

1. Define the bucket name:

bucket_name = 'your-bucket-name'

1. Create a function to create a directory structure:

def create_directory_structure(directory_path):
    if not directory_path.endswith('/'):
        directory_path += '/'
    s3.put_object(Bucket=bucket_name, Key=(directory_path))

This function takes a directory path as an argument and then checks if the path ends with a forward slash "/". If not, it appends a forward slash to the end of the path. Then, it calls the put_object() method of the S3 client to create an empty object with the directory path as its key.

1. Call the function to create directory structure:

create_directory_structure('directory1/directory2/')

This will create a directory structure in the S3 bucket with the following path: directory1/directory2/.