Python 2 -> 3 did not have the luxury that PHP did with 4 -> 5. Python still worked, whereas PHP 4 was running around with its hair on fire screaming for a fire

Python 2 -> 3 did not have the luxury that PHP did with 4 -> 5. Python still worked, whereas PHP 4 was running around with its hair on fire screaming for a fire extinguisher that was PHP 5. Bad analogy, but the point is that Python still worked for most people so the upgrade process was slow. I think Go is going to have issues similar to Python when they make the jump to 2.0. The devs are already on record saying that BC will break.