code: def test_err_on_multiple_column_expansion() -> None:
      # this would be a great feature :)
      with pytest.raises(
          pl.ComputeError,
          match=r"expanding more than one `col` is not allowed",
      ):
          pl.DataFrame(
              {
                  "a": [1],
                  "b": [2],
                  "c": [3],
                  "d": [4],
              }
          ).select([pl.col(["a", "b"]) + pl.col(["c", "d"])])
  
imports: from __future__ import annotations
  import io
  from datetime import date, datetime, time
  from decimal import Decimal
  from typing import TYPE_CHECKING, Any
  import numpy
  import pytest
  import polars
  from polars.datatypes.convert import dtype_to_py_type
  from polars.exceptions import InvalidOperationError
label_desc: Use image node_id 30 for calling a global function with example usage: test_err_on_multiple_column_expansion() without return types