The big problem is that migrating to Python 3 can result in silent runtime bugs. Here's a scary case: https://stackoverflow.com/questions/22288604/lambda-funct

The big problem is that migrating to Python 3 can result in silent runtime bugs. Here's a scary case: https://stackoverflow.com/questions/22288604/lambda-functions-unequal-behaviors-in-python-3-and-python-2 https://stackoverflow.com/questions/22288604/lambda-function...