code: def is_column(obj: Any) -> bool:
      """Indicate if the given object is a basic/unaliased column."""
      from polars.expr import Expr
  
      return isinstance(obj, Expr) and obj.meta.is_column()
  
imports: from __future__ import annotations
  import inspect
  import os
  import re
  import sys
  import warnings
  from collections.abc import MappingView, Sized
  from enum import Enum
  from pathlib import Path
  from typing import TYPE_CHECKING, Any, Generator, Iterable, Literal, Sequence, TypeVar
  import polars
  from polars import functions
  from polars.datatypes import FLOAT_DTYPES, INTEGER_DTYPES, Boolean, Date, Datetime, Decimal, Duration, Int64, String, Time
  from polars.dependencies import _check_for_numpy
  from polars.dependencies import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: is_column(obj) and returns: unknown