code: def make_data(n,m):
      
      I = range(1,n+1)
      J = range(1,m+1)
      x,y,w = {},{},{}
      for i in I:
          x[i] = random.randint(0,100)
          y[i] = random.randint(0,100)
          w[i] = random.randint(1,5)
      return I,J,x,y,w
docs: creates example data set