I’m also not sure how you’d simultaneously:
- have clearly defined context switches
- not have function coloring (even excluding the interaction with async/await)
- not have an issue with ffi
It depends on what you mean by an issue with ffi. Context switching from Python code that has been called from C code, that has been called from Python within the continuation will raise.
That is a limitation of any portable implementation of continuations without significant C API extension.
If this is deemed insufficient by the community, then we can look to implement a (complex) C API to support suspension, or incorporate what gevent does and swap the C stack.
Any two of these are accomplishable trivially
I’m glad you consider it trivial, others in this discussion seemed to be implying it would be too difficult 