What <i>should</i> happen here, is that banks should either pay to accelerate transition to Python 3 to meet the deadline, or they should pay to fund somebody to continue to maintain Python 2.<p>What <i>will</i> happen here, is banks won't see any issue, because their Python 2 software still works after the sunset. It'll be business as usual, and there will eventually be security incidents due to running Python 2.