No one has extensive experience working with Unladen Swallow (other than developers), so it will be difficult to find many people who can discuss this. Also, with the talk of merging Unladen Swallow (which is built using LLVM ) with CPython runtime, everything will be a bit of a moving target until everything becomes more stable.
There are tags for Unladen Swallow, but numpy and scipy are not included. As the developers themselves explain : "... the performance of expansion modules such as numpy is uninteresting because C has numpy core functions.
In short, if you write good code for numpy and scipy , your code will not run โmuch fasterโ under Unladen Swallow, since it already runs under the virtual machine level. If you write bad code for numpy and scipy , you need to fix your code and then return to the first sentence.
Chris B.
source share