narwhals-map
An experimental Narwhals plugin adding Map datatype.
[!TIP] See
narwhals-dev/narwhals#3525issue for more info.
Map is natively supported across all backends except for Polars.
Supported Narwhals backends:
- Arrow
- Ibis
- Polars (via
polars-map)
Currently monkey-patches Narwhals to expose a new nw.col.map namespace.
Installation
$ uv add narwhals-map
Usage
import narwhals as nw
import narwhals_map # registers the Map dtype and .map namespace
df = nw.from_native(native_df) # use polars_map.Map for Polars-backed frames
result = df.select(nw.col("map_col").map.get("key1"))
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