"module initialization " in AWS lambada - amazon-web-services

Question

I have created a SQS queue and now i want to read the data from my lambada function.I have configured the trigger from SQS to this lambada function.
When i put the message in SQS Queue it shows me 1 message in Flight.But when i click test in lambda function it give me
Error
{
"errorMessage": "module initialization error"
}
I am using below boto3
import boto3
sqs = boto3.client('sqs')
queue_url = 'https://sqs.us-east-1.amazonaws.com/944198216610/My-Queue'
response = sqs.receive_message(
QueueUrl='https://sqs.us-east-1.amazonaws.com/944198216610/My-Queue',
AttributeNames=[
'SentTimestamp'],
MaxNumberOfMessages=1,
MessageAttributeNames=[
'All'
],
VisibilityTimeout=0,
WaitTimeSeconds=0
)
message = response['Messages'][0]
receipt_handle = message['ReceiptHandle']
# Delete received message from queue
sqs.delete_message(
QueueUrl='https://sqs.us-east-1.amazonaws.com/944198216610/My-Queue',
ReceiptHandle=receipt_handle
)
print('Received and deleted message: %s' % message)

Answer 1

Your code calls sqs.receive_message, however to properly integrate Lambda with SQS you can use Lambda event triggers. This way, whenever an event goes into the queue, SQS will automatically invoke your Lambda function with that event (or multiple events based on specified batch size).
See here for setting up an SQS Lambda event trigger
Also see here for setting up a Lambda handler in python where the event parameter will be the event SQS triggers your lambda with (print it and see the format of the event so you can get an idea of how to use the event data).
This way, when you send a message to SQS, SQS will trigger your Lambda function, and if your Lambda returns successfully, SQS will remove the message from the queue. You don't need to do receive_message or delete_message manually.