created aggregations notebook#45
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| @app.cell | ||
| def _(): | ||
| import polars as pl | ||
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| df = pl.read_parquet('../data/sales.parquet') | ||
| df | ||
| return df, pl |
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I'd recommend using a hosted URL for the .parquet file instead of having this locally (as I believe it helps save repo space as we add more topics over the course of time). Personally, I'd recommend HuggingFace (polars + HF works great in marimo):
import polars as pl
# Login using e.g. `huggingface-cli login` to access this dataset
df = pl.read_parquet('hf://datasets/<your-username/<filename>.parquet')
| @app.cell | ||
| def _(): | ||
| import polars as pl | ||
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| df = pl.read_parquet('../data/sales.parquet') | ||
| df |
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I also seem to be running into this error:
[wasm] polars read_parquet raises AttributeError: type object 'builtins.PyLazyFrame' has no attribute 'new_from_parquet'
pola-rs/polars#20876 (ah, raised by @mscolnick)
This occurs when I'm trying to preview the file directly in our WASM playground using:
https://marimo.app/https://github.com/marimo-team/learn/blob/0d99c6780c727ad698b03deef1f4a31ee8141a47/polars/12_aggregations.py
| @app.cell | ||
| def _(): | ||
| return | ||
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Just an empty cell here which can be deleted.
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| @app.cell(hide_code=True) | ||
| def _(mo): | ||
| mo.md(r"""There's more you can do with aggregations in Polars. We hope that in this notebook, we've armed you with the tools to get started.""") |
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Hyperlinking relevant words in the notebook to the polars docs webpage for easier referencing?
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Visited the notebook via: https://marimo.app/https://github.com/marimo-team/learn/blob/f42618970f1bbc1d04ffc63f2fb813b33e1caf58/polars/12_aggregations.py; seems to load in the WASM playground. Unchecked the README tickbox in your PR description comment since a README already exists. Great, crisp notebook overall! |
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📝 Summary
📋 Checklist
--sandboxREADME.md