DynamoDB pagination using Boto3

Question

We are using boto3 for our DynamoDB and we need to do a full scan of our tables to enable to do that based on other post we need to do a pagination. However, we are unable to find a working sample of pagination. Here is what we did.

import boto3
client_setting = boto3.client('dynamodb', region_name='ap-southeast-2')
paginator = client_setting.get_paginator('scan')
esk = {}
data = []
unconverted_ga = ourQuery(params1, params2)
    for page in unconverted_ga:
        data.append(page)
        esk = page['LastEvaluatedKey']

We dont know exactly how to make the esk as the ExclusiveStartKey of our next query. What should be the expected value of ExclusiveStartkey parameter? We are still new in DynamoDB and there's many things we need to learn including this. thanks!

Answer 1

From the answer by Tay B at https://stackoverflow.com/a/38619425/3176550

import boto3
dynamodb = boto3.resource('dynamodb',
                          aws_session_token=aws_session_token,
                          aws_access_key_id=aws_access_key_id,
                          aws_secret_access_key=aws_secret_access_key,
                          region_name=region
)

table = dynamodb.Table('widgetsTableName')

response = table.scan()
data = response['Items']

while 'LastEvaluatedKey' in response:
    response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])
    data.update(response['Items'])