There are a lot of reasons to upgrade! There is so much more useful stuff in python 3!
Even if you think you would not use those features, other libraries you may use might benefit a lot from it.
A few features: async/await, lists (and others) use iterators, no var leaking in list comprehensions, super().my_method() instead of super(MyClass, self).my_method(), class MyClass: instead of class MyClass(object):, improved exception handling, required arguments, ", ".join(["etc"]* 1000)
Besides that: a much improved standard library, although that technically not is language design.
ah well, it was just a geeky way to say etc etc etc.... no python3 stuff intended to be used there. Sorry :)
This one then, althoug it sort of works in python 2 as well..
Even if you think you would not use those features, other libraries you may use might benefit a lot from it.
A few features: async/await, lists (and others) use iterators, no var leaking in list comprehensions, super().my_method() instead of super(MyClass, self).my_method(), class MyClass: instead of class MyClass(object):, improved exception handling, required arguments, ", ".join(["etc"]* 1000)
Besides that: a much improved standard library, although that technically not is language design.