This probably would have upset me five years ago when I was still invested in the Python ecosystem (I had been using it since 2.1 in various capacities): the de

This probably would have upset me five years ago when I was still invested in the Python ecosystem (I had been using it since 2.1 in various capacities): the decision to break backwards compatibility in Python 3 was a huge factor in my decision to look around for another language to focus on: my experience with Common Lisp and Clojure (see Rich Hickey’s Speculation talk) has really made me value ecosystems where the people managing the ecosystem don’t waste everyone’s time with trivial breaking changes.