I am trying to understand the following code a bit better ... New to

python

and

pulumi

queue = aws.sqs.Queue("queue")

test = aws.sqs.QueuePolicy("test",

queue_url=queue.id,

policy = queue.arn.apply( lambda arn: f"""{{

On the line

policy = queue.arn.apply(lambda arn:

I do not understand what the key words

lambda

and

arn

relate to or what they are doing here ... I know what they are in AWS world but don't understand what there function is here. Any explanation or points to doc would be great.

That's a lambda expression, or anonymous function. Just a standard part of python, not pulumi specific: https://docs.python.org/3/reference/expressions.html#lambda

ah! thank you, this what i needed but couldn't find

You need these lambda expressions to kind of wait for resources being created. It is the method to cope with the async nature of resources who need a longer time being created.