how to put an Item in aws DynamoDb using aws Lambda with python

Question

Using python in AWS Lambda, how do I put/get an item from a DynamoDB table?

In Node.js this would be something like:

dynamodb.getItem({
    \"Key\": {\"f         


        

Answer 1

full example:

import boto3

def lambda_handler(event, context):

    client = boto3.client('dynamodb')

    for record in event['Records']:
        # your logic here...
        try:
            client.update_item(TableName='dynamo_table_name', Key={'hash_key':{'N':'value'}}, AttributeUpdates={"some_key":{"Action":"PUT","Value":{"N":'value'}}}) 
        except Exception, e:
            print (e)

please note that you need to decide when to use 'update_item' or 'put_item'.

with 'update_item' you ensure to have only one record with the same hash/range. if the record exists it can update this record, else it will create it

http://boto3.readthedocs.org/en/latest/reference/services/dynamodb.html#DynamoDB.Client.update_item