I would consider Cython if the particular bottlenecks were amenable to calling into a lower level language and if the alternative were porting a large applicati

I would consider Cython if the particular bottlenecks were amenable to calling into a lower level language and if the alternative were porting a large application from Python to something else wholesale, but I would probably never start a new application in Python/Cython if there was any chance that performance would ever matter. The alternatives are simply too good. > I find Go’s ergonomics to be worse than Python but better, mostly, than Java. This is surprising. I'm a Python developer, and I still prototype new features in Go.