code: def get_leaf_output(self, tree_id, leaf_id):
          
          ret = ctypes.c_double(0)
          _safe_call(_LIB.LGBM_BoosterGetLeafValue(
              self.handle,
              ctypes.c_int(tree_id),
              ctypes.c_int(leaf_id),
              ctypes.byref(ret)))
          return ret.value
docs: Get the output of a leaf.
  
          Parameters
          ----------
          tree_id : int
              The index of the tree.
          leaf_id : int
              The index of the leaf in the tree.
  
          Returns
          -------
          result : float
              The output of the leaf.