code: def centroid(x, y):
      return ((x / x.sum()) * y).sum()
  
file_path: ray/python/ray/tests/test_numba.py
imports: import unittest
  from numba import njit
  import numpy
  import ray
label_desc: Use image node_id 1 for calling a global function with example usage: centroid(x, y) and returns: unknown