code: def __contains__(self, item):
      return self.column_index(item) != -1
  
imports: import array
  from abc import ABC, abstractmethod
  from math import atan, tan
  from typing import Tuple
  import numpy
  from darts.logging import raise_if, raise_if_not
label_desc: Use image node_id 4 for calling the Window obj's underlying member method code with example usage: obj.__contains__(item) and returns: unknown