Wasm import functions

[mikevoronov]

Sorry for possibly trivial Q, but I can't find any example or guide.

Is it possible to use WASI from Python code and provide some Wasm custom imports during VM initialization/running? Namely, can I call some GPU stuff from Python with f.e. wasi-nn or my own custom imports?

[mikevoronov]

Friendly reminder.

[mikevoronov]

So, it looks like a simple Q that developers should know the answer in advance. Or did I use an incorrect approach to reach you? If so, what is the best way?

[komodo472]

Yes its possible. You can define a #[pyfunction] like in this example
https://github.com/RustPython/RustPython/blob/main/examples/call_between_rust_and_python.rs
where you call your own wasm custom imports. The src directory contains another example of how this this can be achieved. To build for wasi you just need to follow the instructions in the README

RustPython/src/lib.rs

Lines 27 to 32 in f39f103

	//! #[pyfunction]
	//! fn other_thing(s: PyStrRef) -> (String, usize) {
	//! let new_string = format!("hello from rust, {}!", s);
	//! let prev_len = s.as_str().len();
	//! (new_string, prev_len)
	//! }

[fanninpm]

@mikevoronov Did this answer your question?

[youknowone]

I don't know about wasi-nn, but if you can call it from rust side, you also can call it from RustPython as @komodo472 explained.
Thanks @komodo472 !