Get value only when calling get_item in Lambda Python

0

I am successfully getting an item from DynamoDB in a Lambda Pyton with Boto3. However, I am getting attribute: value. not just the value. Is there a way to invoke get_tem to get just the value?

Python Code: import json import boto3

def lambda_handler(event, context): dynamodb = boto3.resource('dynamodb', region_name = 'us-east-1') table = dynamodb.Table('D12Sites')

response = table.get_item(
    Key={'SitesID': '1'},
    ProjectionExpression='D12Website',
    )
resp1 = response["Item"]
print(resp1)

#resp1 is: {'D12Website': 'http://site.live'} #Need just: 'http://site.live'

return {
    'statusCode': 200,
    'body': json.dumps(response["Item"]),
}

#{'D12Website': 'http://site.live'}

profile picture
Petrus
asked a month ago287 views
1 Answer
4

Are you Expecting the value and ignore key(attribute)(Key: Value)?

Extract the value from the response

website_value = response.get("Item", {}).get("D12Website", None)

print(website_value)
answered a month ago
profile picture
EXPERT
reviewed a month ago
  • Just to be sure.....First, thanks. Second: this works on the variable response, not call the database table again. Correct?

  • Yes, The Response Variable Holds the result of the get_item operation which already retrieves the item from dynamodb table, so by extracting value from the response variable you are not making another call to database

You are not logged in. Log in to post an answer.

A good answer clearly answers the question and provides constructive feedback and encourages professional growth in the question asker.

Guidelines for Answering Questions