Copy DynamoDB Table to Another Table

transfer_ddb.py

#!/usr/bin/env python3
import boto3

# parameters for source account
SRC_ACCOUNT_PROFILE = 'aws_profile_name'
SRC_ACCOUNT_REGION = 'us-east-1'
SRC_TABLE = 'your-source-table-name'

# parameters for destination account
DST_ACCOUNT_PROFILE = 'aws_profile_name'
DST_ACCOUNT_REGION = 'us-east-1'
DST_TABLE = 'your-destination-table-name'

def pull_items(session, table_name):
    ddb = session.client('dynamodb')
    paginator = ddb.get_paginator('scan')
    pages = paginator.paginate(TableName=table_name)
    for page in pages:
        items = page['Items']
        for item in items:
            yield item

def push_items(session, table_name, items):
    ddb = session.resource('dynamodb')
    table = ddb.Table(table_name)
    count = 0
    with table.batch_writer() as batch:
        for item in items:
            count = count + 1
            print(f'push item # {count}')
            batch.put_item(Item=item)

def main():
    src_session = boto3.Session(region_name=SRC_ACCOUNT_REGION, profile_name=SRC_ACCOUNT_PROFILE)
    dst_session = boto3.Session(region_name=DST_ACCOUNT_REGION, profile_name=DST_ACCOUNT_PROFILE)
    items = pull_items(src_session, SRC_TABLE)
    push_items(dst_session, DST_TABLE, items)

if __name__ == "__main__":
     main()

This is a simple script that will copy a source ddb table to a destination table. This script doesn't copy the schema or secondary indexes. I will update this script if whenever I need to copy a ddb table with secondary indexes.