AWS - Serverless Architecture
Which of the following is the correct Python syntax to access the 'NewImage' attribute from a DynamoDB Stream event record in a Lambda function?
Which of the following is the correct Python syntax to access the 'NewImage' attribute from a DynamoDB Stream event record in a Lambda function?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand event record structure
Event records use lowercase 'dynamodb' key and 'NewImage' with exact casing inside it.Step 2: Identify correct Python dictionary access
Python dict keys are case-sensitive; 'NewImage' must match exactly, so record['dynamodb']['NewImage'] is correct.Final Answer:
record['dynamodb']['NewImage'] -> Option AQuick Check:
Correct key casing and syntax = A [OK]
Quick Trick: Use exact key names with correct case in dict access [OK]
Common Mistakes:
- Using wrong case for keys
- Using dot notation on dict
- Mixing camelCase and snake_case
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