pywasm: A WebAssembly interpreter written in pure Python.

A WebAssembly interpreter written in pure Python.

The wasm version currently in use is: WebAssembly Core Specification, W3C Recommendation, 5 December 2019. Just like Firefox or Chrome does.

Installation

$ pip3 install pywasm

Some simple examples

First we need a wasm module! Grab our ./examples/fib.wasm file and save a copy in a new directory on your local machine. Note: fib.wasm was compiled from ./examples/fib.c by WasmFiddle.
Now, compile and instantiate WebAssembly modules directly from underlying sources. This is achieved using the pywasm.load method.

import pywasm
# pywasm.on_debug()

runtime = pywasm.load('./examples/fib.wasm')
r = runtime.exec('fib', [10])
print(r) # 55

A brief description for ./examples

File	Description
./examples/add.wasm	Export i32.add function
./examples/env.wasm	Call python/native function in wasm
./examples/fib.wasm	Fibonacci, which contains loop and recursion
./examples/str.wasm	Export a function which returns string
./examples/sum.wasm	Equal difference series summation

Of course there are some more complicated examples!

Zstandard decompression algorithm: https://github.com/dholth/zstdpy
Run AssemblyScript on pywasm: https://github.com/mohanson/pywasm_assemblyscript

Test

$ python3 ./test/test_spec.py

Tested in the following environments:

Python >= 3.6

Thanks

wagon
warpy

License

MIT

Metadata

Release files for pywasm 1.0.1

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Source distribution (sdist)

Source distribution for pywasm 1.0.1
File	Size	Uploaded	Provenance
pywasm-1.0.1.tar.gz	28.4 kB	May 9, 2020	Without provenance	Details

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Table of built distributions (wheels) for pywasm 1.0.1
File	Interpreter	ABI	Platform	Reset
pywasm-1.0.1-py3-none-any.whl 28.1 kB May 9, 2020 Without provenance	Python 3	none	any	Details

Total release size: 56.4 kB

Release files / pywasm-1.0.1.tar.gz

Download URL	pywasm-1.0.1.tar.gz
Size	28.4 kB
Tags	Source
SHA-256 checksum How to use checksums	`a94cbcafe88a4416343323eec2c4e1b6e1732b94431dd7a2a631957727c986f3`
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Upload date	May 9, 2020
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/3.1.1 pkginfo/1.5.0.1 requests/2.23.0 setuptools/46.1.3 requests-toolbelt/0.9.1 tqdm/4.44.1 CPython/3.8.1`

Release files / pywasm-1.0.1-py3-none-any.whl

Download URL	pywasm-1.0.1-py3-none-any.whl
Size	28.1 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`7efd2e805bbf13773d43b8e9f85fa493b03d0413a36c8e3ba2d621317f99e7b2`
BLAKE2b-256 checksum How to use checksums	`230ac6cdb30c8ab16f19a489c38abcef81b15e89c4f8172b4e93b0d7a414b557`
Upload date	May 9, 2020
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/3.1.1 pkginfo/1.5.0.1 requests/2.23.0 setuptools/46.1.3 requests-toolbelt/0.9.1 tqdm/4.44.1 CPython/3.8.1`

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