mkdir add
cd add
vim main.py

def add(event, context):
    return event.get('a') + event.get('b')

zip main.zip main.py




### choose any IAM role , edit Trust Relationship
and copy "Policy Document"

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Service": "lambda.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

save it as 'basic_lambda_role.json'
aws iam create-role --role-name basic_lambda_role --assume-role-policy-document file:///tmp/basic_lambda_role.json --profile tayseer



aws lambda create-function  --function-name add --zip-file fileb://main.zip --role arn:aws:iam::466775254223:role/basic_lambda_role --handler main.add --runtime python2.7 --profile tayseer

aws lambda invoke  --function-name add --log-type Tail --payload '{"a":1, "b":2 }' --profile tayseer outputfile.txt