code: def gtz(value):  # greater than zero
      return value if value > 0 else 0
  
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 1 for calling a global function with example usage: gtz(value) and returns: unknown