Parses dynamodb responses into a list dictionaries with attribute names as keys
Project description
Parses Dynamodb responses into a more usable format. Results are returned as a list of dictionaries with the attribute names being the key. Results are parsed recursively. One use is to return results directly to Appsync from a Lambda function. Parses all scalar types that Dynamo supports
N (number scalar) - cast as integer or Decimal types
S (string scalar) - stays string
SS (string set scalar) - list of strings
NS (number set scalar) - list of Decimal/integer
L (list scalar) - list
BOOL (boolean scalar) - boolean
B (binary scalar) - string of base64
BS (binary set scalar) - list of base64 strings
NULL (null scalar) - None
M (map scalar) - Dictionary
Responses are returned formated as:
[
{"attributeOneName": {"S": "value1"}, "attributeTwoName": {"S": "value2"}},
{"attributeOneName": {"S": "value1"}, "attributeTwoName": {"S": "value2"}}
]
Becomes
[
{"attributeOneName": "value1", "attributeTwoName": "value2"},
{"attributeOneName": "value1", "attributeTwoName": "value2"}
]
Where each dictionary in the top level array is a separate item.
Methods
parseResults(records) -> dict Arguments: items – Response from any boto3 call to Dynamodb that returns Items in the response
Example
from dynamodbPrettyParser import parseResults
import boto3
dynamodb = boto3.client('dynamodb')
response = dynamodb.query(
TableName='mytable',
KeyConditionExpression='my_attribute = :foo',
ExpressionAttributeValues={':foo': 'bar'}
)
print(parseResults(response))
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