old_contents: from kmeans import kmeans
  
  
  def test_single_point():
      value = [0, 10, 20]
      points = [
          [value, 1]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert value == means[0]
  
  
  def test_single_point_with_guess():
      value = [0, 10, 20]
      guess = [-20, 50, 100]
      points = [
          [value, 1]
      ]
      k = 1
      means = [
          guess
      ]
      means = kmeans(points, k, means=means)
      assert 1 == len(means)
      assert value == means[0]
  
  
  def test_two_points():
      real_mean = [10, 10, 10]
      points = [
          [(0, 0, 0), 1],
          [(20, 20, 20), 1]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert real_mean == means[0]
  
  
  def test_two_points_two_centers():
      values = [
          [0, 10, 20],
          [-100, -400, -1600]
      ]
      points = [
          [value, 1] for value in values
      ]
      k = 2
      means = kmeans(points, k)
      assert 2 == len(means)
      for value in values:
          assert value in means
  
  
  def test_two_points_with_weights():
      real_mean = [20, 20, 20]
      points = [
          [(0, 0, 0), 1],
          [(30, 30, 30), 2]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert real_mean == means[0]
  
new_contents: from kmeans import kmeans
  
  
  def test_single_point():
      value = [0, 10, 20]
      points = [
          [value, 1]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert value == means[0]
  
  
  def test_single_point_with_guess():
      value = [0, 10, 20]
      guess = [(-20, 50, 100), 1]
      points = [
          [value, 1]
      ]
      k = 1
      centers = [
          guess
      ]
      means = kmeans(points, k, centers=centers)
      assert 1 == len(means)
      assert value == means[0]
  
  
  def test_two_points():
      real_mean = [10, 10, 10]
      points = [
          [(0, 0, 0), 1],
          [(20, 20, 20), 1]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert real_mean == means[0]
  
  
  def test_two_points_two_centers():
      values = [
          [0, 10, 20],
          [-100, -400, -1600]
      ]
      points = [
          [value, 1] for value in values
      ]
      k = 2
      means = kmeans(points, k)
      assert 2 == len(means)
      for value in values:
          assert value in means
  
  
  def test_two_points_with_weights():
      real_mean = [20, 20, 20]
      points = [
          [(0, 0, 0), 1],
          [(30, 30, 30), 2]
      ]
      k = 1
      means = kmeans(points, k)
      assert 1 == len(means)
      assert real_mean == means[0]
  
subject: Update center format in tests