Coverts a standard Python3 dictionary to a Boto3 DynamoDB item

dict_to_dynamodb_item.py

def dict_to_item(raw:dict):
    return {
            key: _dict_to_item_recurse(value)
            for key, value in raw.items()
        }


def _dict_to_item_recurse(raw):
    if isinstance(raw, dict):
        return {
            'M': {
                key: _dict_to_item_recurse(value)
                for key, value in raw.items()
            }
        }
    elif isinstance(raw, list):
        return {
            'L': [_dict_to_item_recurse(value) for value in raw]
        }
    elif isinstance(raw, str):
        return {'S': raw}
    elif isinstance(raw, bool):
        return {'BOOL', raw}
    elif isinstance(raw, (int, float)):
        return {'N': str(raw)}
    elif isinstance(raw, bytes):
        return {'B', raw}
    elif raw is None:
        return {'NULL': True}