Perspective int types overflow on Arrow unsigned int types

[David Roher]

Bug Report

Steps to Reproduce:

Run this code in jupyterlab (duckdb version was 0.10.1 but should work on any recent version)

import perspective
import duckdb
import pyarrow as pa
import io

# Create a column of unsigned 8-bit integers (0-255)
table = duckdb.sql("""
SELECT 0::utinyint AS unsigned_col
UNION ALL
SELECT 127::utinyint
UNION ALL
SELECT 128::utinyint
UNION ALL
SELECT 255::utinyint
""").arrow()
buffer = io.BytesIO()

with pa.ipc.new_file(buffer, table.schema) as writer:
    writer.write_table(table)

bytes_object = buffer.getvalue()

perspective_table = perspective.Table(bytes_object)
perspective.PerspectiveWidget(perspective_table)

Expected Result:

Should be able to handle without overflow

Actual Result:

Environment:

perspective-python 2.10.0 running on Python 3.11, jupyterlab 3.6.5, MacOS 14.4.1.

Additional Context:

I first noticed this issue in the JS package but it was easier for me to create a replicable example in Python. This is a similar issue as the one I just posted in #2582, but seemed different enough to warrant a separate issue.

[Andrew Stein]

Perspective does not support unsigned integer types.