Asyncio is not working within my Python3.7 lambda - amazon-web-services

Question

I am trying to create a python3.7 lambda which correctly uses asyncio for threading.
I have tried many different code variations but here is the latest block. I am using AWS Xray to look at the timing and it is easy to verify that the async is not working correctly. All these tasks and calls are being done synchronously.
import json
import boto3
import asyncio
from botocore.exceptions import ClientError
from aws_xray_sdk.core import xray_recorder
from aws_xray_sdk.core import patch_all
#xray
patch_all()
def lambda_handler(event, context):
tasks = []
dict_to_populate = {}
for item in list:
tasks.append(asyncio.ensure_future(do_work(item, dict_to_populate)))
loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.gather(*tasks))
loop.close
async def do_work(item, dict_to_populate):
#assume regions are obtained
for region in regions:
response_vpcs = describe_vpcs(obj['Id'], session_assumed, region)
if 'Vpcs' in response_vpcs:
for vpc in response_vpcs['Vpcs']:
#process
I expect to see the do_work functions started at essentially the same time (asynchronously) but they are all synchronous according to XRAY. It is processing synchronously and is populating dict_to_populate as expected.

Answer 1

This is how i have done in my aws lambda, I wanted to do 4 post request and then collect all the responses. Hope this helps.
loop = asyncio.get_event_loop()
if loop.is_closed():
loop = asyncio.new_event_loop()
#The perform_traces method i do all the post method
task = loop.create_task(perform_traces(payloads, message, contact_centre))
unique_match, error = loop.run_until_complete(task)
loop.close()
In the perform_trace method this is how i have used wait with session
future_dds_responses = []
async with aiohttp.ClientSession() as session:
for payload in payloads:
future_dds_responses.append(dds_async_trace(session, payload, contact_centre))
dds_responses, pending = await asyncio.wait(future_dds_responses)
In dds_async_trace this is how i have done the post using the aiohttp.ClientSession session
async with session.post(pds_url,
data=populated_template_payload,
headers=PDS_HEADERS,
ssl=ssl_context) as response:
status_code = response.status