We've barely started (we produce embedded router/fw appliances.) We've written up our backlog items to start tackling it but when you're under a constant crunch

We've barely started (we produce embedded router/fw appliances.) We've written up our backlog items to start tackling it but when you're under a constant crunch to get features and bug fixes out the door, PM will never prioritize willingly introducing subtle bugs across the entire codebase unless there's an extremely strong reason to upgrade. Unfortunately "no longer receives security updates" isn't strong enough. Until we can't ship a new feature without Python 3, we'll be on 2 for a long time.