CalculateNeighborsClass.py

def CalculateNeighborsClass(neighbors,k):
  count = {};

  for i in range(k):
    if(neighbors[i][1] not in count):
      #The class at the ith index is not in the count dict.
      #Initialize it to 1.
      count[neighbors[i][1]] = 1;
    else:
      #Found another item of class c[i].
      #Increment its counter.
      count[neighbors[i][1]] += 1;

  return count;