code: def distance(x, y):
      return np.abs(x - y)
  
file_path: autograd/examples/fixed_points.py
imports: from __future__ import print_function
  import autograd.numpy
  from autograd import grad
  from autograd.misc.fixed_points import fixed_point
label_desc: Use image node_id 4 for calling a global function with example usage: distance(x, y) and returns: np