code: def lt(self, y):
      """Returns self < y"""
      return (self - y)._ltz()
  
file_path: CrypTen/crypten/common/functions/logic.py
imports: import crypten
  from crypten.common.tensor_types import is_tensor
label_desc: Use image node_id 4 for calling a global function with example usage: lt(y) and returns: unknown