code: def hamming(x, y):
      result = 0.0
      for i in range(x.shape[0]):
          if x[i] != y[i]:
              result += 1.0
  
      return float(result) / x.shape[0]
  
imports: import numpy
  import numba
  from pynndescent.optimal_transport import allocate_graph_structures, initialize_graph_structures, initialize_supply, initialize_cost, network_simplex_core, total_cost, ProblemStatus, sinkhorn_transport_plan
label_desc: Use image node_id 9 for calling a global function with example usage: hamming(x, y) and returns: unknown