Create an AWS DynamoDB item from a python dictionary, initialize a table, put an item into DynamoDB (using boto3)

AWS_dynamoDB.py

import logging
import boto3
import json
import decimal
from botocore.exceptions import ClientError

logger = logging.getLogger()

# Format outputs
class DecimalEncoder(json.JSONEncoder):
    def default(self, o):
        if isinstance(o, decimal.Decimal):
            if o % 1 > 0:
                return float(o)
            else:
                return int(o)
        return super(DecimalEncoder, self).default(o)


def initialize_dynamoDB(tableName):
    """Initialize logging and the DynamoDB table. Assumes AWS CLI is configured.

    :param tableName: Table to load (string).
    :return dynamoTable: AWS DynamoDB table.
    """
    logger.setLevel(logging.INFO)
    dynamoTable = boto3.resource('dynamodb').Table(tableName)
    logger.info("Loaded table: " + tableName)

    return dynamoTable


def dict_2_dynamoDB_item(raw):
    """Make a DynamoDB item from a python dictionary.

    :param raw: The raw data to create the item (dict).
    :return result: Formatted DynamoDB item (dict).
    """
    if type(raw) is dict:
        result = {}
        for k, v in raw.items():
            if type(v) is str:
                if not v:
                    result[k] = "NULL"
                else:
                    result[k] = v
            if type(v) is int:
                result[k] = str(v)
            if type(v) is dict:
                result[k] = dict_2_dynamoDB_item(v)
            if type(v) is list:
                result[k] = []
                for i in v:
                    result[k].append(dict_2_dynamoDB_item(i))
        return result


def upload_item(item, dynamoTable ):
    """Put an item into an AWS DynamoDB table.

    :param item: The item to store (dict)
    :param dynamoTable: The table to store in.
    :return: void.
    """
    try:
        response = dynamoTable.put_item(
            Item=item
        )
    except ClientError as e:
        print(e.response['Error']['Message'])
    else:
        print("PutItem succeeded:")
        print(json.dumps(response, indent=4, cls=DecimalEncoder))
    return