title: Using boto to invoke lambda functions how do I do so asynchronously?
body: <p>SO I'm using boto to invoke my lambda functions and test my backend. I want to invoke them asynchronously. I have noted that "invoke_async" is deprecated  and should not be used. Instead you should use "invoke" with an InvocationType of "Event" to do the function asynchronously.  </p>
  
  <p>I can't seem to figure out how to get the responses from the functions when they return though. I have tried the following: </p>
  
  <pre><code>payload3=b"""{
  "latitude": 39.5732160891,
  "longitude": -119.672918997,
  "radius": 100
  }"""
  
  client = boto3.client('lambda')
  for x in range (0, 5):
      response = client.invoke(
          FunctionName="loadSpotsAroundPoint",
          InvocationType='Event',
          Payload=payload3
      )
      time.sleep(15)
      print(json.loads(response['Payload'].read()))
      print("\n")
  </code></pre>
  
  <p>Even though I tell the code to sleep for 15 seconds, the response variable is still empty when I try and print it. If I change the invokation InvokationType to "RequestResponse" it all works fine and response variable prints, but this is synchronous. Am I missing something easy? How do i execute some code, for example print out the result, when the async invokation returns??</p>
  
  <p>Thanks.</p>