No matter how you like to participate in developer communities, Pulumi wants to meet you there. If you want to meet other Pulumi users to share use-cases and best practices, contribute code or documentation, see us at an event, or just tell a story about something cool you did with Pulumi, you are part of our community.

Pulumi Community

I don't think the parallel option has any effect for python.
You only need to account for name collisions when making multiple resources if you set their name property directly. If you leave their name unset pulumi will invoke its automaming logic and fill in random chars at the end of names (<https://www.pulumi.com/docs/intro/concepts/resources/names/#autonaming>)