Polars

??? abstract "TLDR"

```{ .python .no-check }
import edsnlp

stream = edsnlp.data.from_polars(df, converter="omop")
stream = stream.map_pipeline(nlp)
res = stream.to_polars(converter="omop")
# or equivalently
edsnlp.data.to_polars(stream, converter="omop")
```

We provide methods to read and write documents (raw or annotated) from and to Polars DataFrames.

As an example, imagine that we have the following OMOP dataframe (we'll name it note_df)

Reading from a Polars Dataframe {: #edsnlp.data.polars.from_polars }

::: edsnlp.data.polars.from_polars
options:
heading_level: 3
show_source: false
show_toc: false
show_bases: false

Writing to a Polars DataFrame {: #edsnlp.data.polars.to_polars }

::: edsnlp.data.polars.to_polars
options:
heading_level: 3
show_source: false
show_toc: false
show_bases: false