code: def _is_1d_varray(arr):
      """
      Check whether the array has single dimension like (x, ) or (x, 1)
      """
      return len(arr.shape) < 2 or arr.shape[1] == 1
  
label_desc: Use image node_id 1 for calling a global function with example usage: _is_1d_varray(arr) and returns: unknown