title: boto3 publish message in SNS
body: <p>I want to run a script to publish message to my sns topic. I followed the documentation and my code is this :</p>
  
  <pre><code>import boto3
  
  client = boto3.client('sns')
  
  response = client.publish(
      TopicArn='my topic arn',    
      Message='ptt message '
  )
  print("Response: {}".format(response))
  </code></pre>
  
  <p>It prints the response json, but I don't see any message in my AWS SNS console. I have a lambda function which is pretty basic as a subscriber to this sns. </p>
  
  <p>The lambda code :</p>
  
  <pre><code>import json
  
  def lambda_handler(event, context):
      # TODO implement
      return {
          'statusCode': 200,
           'body': json.dumps('Hello from Lambda!') 
      }
  </code></pre>
  
  <p>How can I be sure that my message "ptt message" has been published successfully? How can I check it?</p>