Accept Parameters

import json

def lambda_handler(event, context):
    name = event['queryStringParameters']['name']
    
    return {
        'statusCode': 200,
        'headers': { 'Content-Type': 'application/json' },
        'body': json.dumps({ 'message': 'Hello {}!'.format(name) })
    }

• Save and Click "Test"
• Observe the error

{
  "errorMessage": "'queryStringParameters'",
  "errorType": "KeyError",
  "stackTrace": [
    [
      "/var/task/lambda_function.py",
      4,
      "lambda_handler",
      "name = event['queryStringParameters']['name']"
    ]
  ]
}

• Our Python code is not safe enough, we assume a field "name" to be passed in.