Well, if you rewrite in C, you're not using the language whose semantics make it difficult to execute quickly - you're using C. One of the great things about Py

Well, if you rewrite in C, you're not using the language whose semantics make it difficult to execute quickly - you're using C. One of the great things about Python is the (relative) ease of interfacing with code written in another language (particularly C), so I don't see this as a square-peg-round-hole situation. You're using the right tool for the job, possibly on the per-function level instead of per-project, but it's much the same. I really don't see the speed thing as a problem. I write everything in Python until it's slow, then I write some Cython or cuda for the bottleneck. No biggie. One language doesn't need to do everything, and with the particular set of compromises it has made, Python seems to cover a wider range of general-purposesness than most languages, so I'm happy.