docs: def binboolflip(item):
      """
      Convert 0 or 1 to False or True (or vice versa).
      The converter works as follows:
  
      - 0 > False
      - False > 0
      - 1 > True
      - True > 1
  
      :type item: integer or boolean
      :param item: The item to convert.
  
      >>> binboolflip(0)
      False
  
      >>> binboolflip(False)
      0
  
      >>> binboolflip(1)
      True
  
      >>> binboolflip(True)
      1
  
      >>> binboolflip("foo")
      Traceback (most recent call last):
        ...
      ValueError: Invalid item specified.
      """
  
      if item in [0, False, 1, True]:
          return int(item) if isinstance(item, bool) else bool(item)
  
      # Raise a warning
      raise ValueError("Invalid item specified.")