import polars as pl
import plotly.express as px
data = [
	pl.Series(
		'level',
		['a', 'a', 'a', 'a', 'a', 'b', 'b', 'b', 'b', 'c', 'c', 'c', 'd', 'd', 'e'],
		dtype=pl.String,
	),
	pl.Series('name', ['v1', 'v2', 'v3', 'v4', 'v5', 'v6', 'v7', 'v8', 'v9', 'v10', 'v11', 'v12', 'v13', 'v14', 'v16'], dtype=pl.String),
]
df = pl.DataFrame(data)
pie = px.pie(
	df['level'].value_counts(),
	names='level',
	values='count',
	color='level',
	color_discrete_map={
		'e': 'rgb(255, 43, 43)',
		'd': 'rgb(255, 171, 171)',
		'c': 'rgb(0, 104, 201)',
		'b': 'rgb(131, 201, 255)',
		'a': 'rgb(125, 239, 161)',
	},
	category_orders={'level': ['a', 'b', 'c', 'd', 'e']},
)

Traceback (most recent call last):
 File "path/to/project/app/main.py", line 438, in draw_pie
 px.pie(
 ~~~~~~^
 df['level'].value_counts(),
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 ...<10 lines>...
 category_orders={'level': ['a', 'b', 'c', 'd', 'e']},
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 ),
 ^
 File "path/to/project/.venv/lib/python3.13/site-packages/plotly/express/_chart_types.py", line 1701, in pie
 return make_figure(
 args=locals(),
 ...<2 lines>...
 layout_patch=layout_patch,
 )
 File "path/to/project/.venv/lib/python3.13/site-packages/plotly/express/_core.py", line 2481, in make_figure
 args, trace_patch = process_dataframe_pie(args, trace_patch)
 ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
 File "path/to/project/.venv/lib/python3.13/site-packages/plotly/express/_core.py", line 2165, in process_dataframe_pie
 df.with_columns(
 ~~~~~~~~~~~~~~~^
 nw.col("b")
 ^^^^^^^^^^^
 .replace_strict(order, range(len(order)), return_dtype=nw.UInt32)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 .alias(token)
 ^^^^^^^^^^^^^
 )
 ^
 File "path/to/project/.venv/lib/python3.13/site-packages/narwhals/dataframe.py", line 1302, in with_columns
 return super().with_columns(*exprs, **named_exprs)
 ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
 File "path/to/project/.venv/lib/python3.13/site-packages/narwhals/dataframe.py", line 139, in with_columns
 self._compliant_frame.with_columns(*compliant_exprs, **compliant_named_exprs),
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "path/to/project/.venv/lib/python3.13/site-packages/narwhals/_polars/dataframe.py", line 124, in func
 raise ColumnNotFoundError(msg) from e
narwhals.exceptions.ColumnNotFoundError: b
Resolved plan until failure:
 ---> FAILED HERE RESOLVING 'with_columns' <---
DF ["level", "count"]; PROJECT */2 COLUMNS
Hint: Did you mean one of these columns: ['level', 'count']?