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Extending web applications with WebAssembly and Python

wasmlabs.dev

21–27 of 27 posts

Re: Extending web applications with WebAssembly and Python

#21
post #15

This py wasm runtime is not sound. Many .whl modules include binarys, obviously it will not runable. This narrow the usage.

This is a work in progress effort. I saw different people working on this direction, so you can use Python libraries that includes native extensions in Wasm.

Re: Extending web applications with WebAssembly and Python

#22
post #11

Earlier quoted context omitted.

Sounds great, I will put it in my new operating system running in the browser https://extendedmachine.com .

Not sure if you’re just trying to advertise your project, but I wouldn’t use Pyodide in that case. I’d personally rather use the tool linked in the OP article for something like an OS in the browser

In fact it seems that WASI build environment is not supporting asynchronous syscalls. I think it will be needed for integrating Python apps in a web browser

Re: Extending web applications with WebAssembly and Python

#23
post #14

This is exactly what I needed. Context is I am trying to incorporate different scripting language in our rust app so I tried RustPython and QuickJS. Its been a pain so far and it adds a lot of time to our compilation so I love the idea of being able to load a wasm python but I was missing this script to host communication part.

This is great! We are constantly providing new features to the pre-built binaries we publish in this project. Happy to read it helps you :)

Re: Extending web applications with WebAssembly and Python

#25
post #20
post #16

Earlier quoted context omitted.

Rust is not an interpreted language like Python. Your comment would make sense if Python code could be compiled into x86 or ARM assembly in the first place.

> Your comment would make sense if Python code could be compiled into x86 or ARM assembly in the first place. It can actually be compiled (or transpiled) into C code [1] with few limitations, so I can't see why not. It still requires libpython but it should be better than porting the whole interpreter to webassembly. [1] https://github.com/Nuitka/Nuitka

By that logic, you can transpile your Python to C and then compile to Wasm

Re: Extending web applications with WebAssembly and Python

#26
post #13

Earlier quoted context omitted.

How is it misleading? It is the whole point that you can compile CPython or PHP interpreters to target this as another target platform like x86 or ARM

Python performance on wasm is going to be abysmal because you're essentially running a VM inside a VM. Other languages like rust can compile directly to wasm. Until Python can do the same it will be a second or third class citizen in wasm. Put another way, you could make one of those tier charts for WASM tooling, and if rust is in S tier, python is like C or D tier.

You are not running a VM inside a VM. You are compiling to another target and modern Wasm runtimes allow AOT and JIT so performance is close to native while preserving all the other goodness of Wasm (sandbox, portability to 'weird' environments like browsers and IoT, etc)

Re: Extending web applications with WebAssembly and Python

#27
post #20

Earlier quoted context omitted.

> Your comment would make sense if Python code could be compiled into x86 or ARM assembly in the first place. It can actually be compiled (or transpiled) into C code [1] with few limitations, so I can't see why not. It still requires libpython but it should be better than porting the whole interpreter to webassembly. [1] https://github.com/Nuitka/Nuitka

By that logic, you can transpile your Python to C and then compile to Wasm

Yes, that was my point. AFAIK it is not possible with current tooling, though.
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