lovuikeng•2w ago

wasm export local file read

exporting notebook to wasm

$ uv tool run marimo@0.10.2 export html-wasm apps.py -o wasm --mode run

serve it on python http server, after loading the index file, caught

This cell raised an exception: FileNotFoundError('[Errno 44] No such file or directory: 'data.csv''

does wasm export support reading local file?

Solution:

It does not at the moment. We have an issue internally tracking this

Jump to solution

7 Replies

Hall•2w ago

Someone will reply to you shortly. In the meantime, this might help:

Solution

Myles Scolnick•2w ago

It does not at the moment. We have an issue internally tracking this

Myles Scolnick•2w ago

Is difficult since we would need to bundle this And there is a limit of what wasm can support in terms of file size

lovuikengOP•2w ago

ok, just to confirm, thank you, wasm standalone looks really great feature to explore 🙂

mcaggio•2w ago

not sure if I understood the question correctly, but if you want to make a file available to the pyodide kernel, provided the file is available for download from a url, you can download it to the local wasm kernel filesystem

from pyodide.http import pyfetch

response = await pyfetch("https://raw.githubusercontent.com/caggionim/marimo_rheofit/refs/heads/main/models.py")
with open('models.py', 'wb') as file:
    file.write(await response.bytes())

from pyodide.http import pyfetch

response = await pyfetch("https://raw.githubusercontent.com/caggionim/marimo_rheofit/refs/heads/main/models.py")
with open('models.py', 'wb') as file:
    file.write(await response.bytes())

mcaggio•2w ago

I have an example in this repository https://github.com/caggionim/marimo_rheofit

GitHub

GitHub - caggionim/marimo_rheofit: testing_marimo_app

testing_marimo_app. Contribute to caggionim/marimo_rheofit development by creating an account on GitHub.

lovuikengOP•2w ago

thanks, true that reading CSV from URL does work, the intention here is to read from local file path

wasm export local file read

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