Describe listener rule count using Boto3-CodePudding

i need to list listener rules count but still i get a output as null without any error.my complete project was getting email notification from when listener rules created on elastic load balancer.

import json
import boto3

def lambda_handler(event, context):
    client = boto3.client('elbv2')
    response = client.describe_listeners(
    ListenerArns=[
        'arn:aws:elasticloadbalancing:ap-south-1:my_alb_listener',
    ],
)

print('response')

Here is the output of my code

Response null

CodePudding user response：

Response is null because your indentation is incorrect and you are not returning anything from your handler. It should be:

import json
import boto3

def lambda_handler(event, context):
    client = boto3.client('elbv2')
    response = client.describe_listeners(
    ListenerArns=[
        'arn:aws:elasticloadbalancing:ap-south-1:my_alb_listener',
      ],
    )

    return response