old_contents: from mlxtend.data import iris_data
  from mlxtend.data import wine_data
  from mlxtend.data import autompg_data
  from mlxtend.data import mnist_data
  
  def test_import_wine_data():
      X, y = wine_data()
      assert(X.shape[0] == 178)
      assert(X.shape[1] == 13)
      assert(y.shape[0] == 178)
  
  def test_import_iris_data():
      X, y = iris_data()
      assert(X.shape[0] == 150)
      assert(X.shape[1] == 4)
      assert(y.shape[0] == 150)
  
  def test_import_autompg_data():
      X, y = autompg_data()
      assert(X.shape[0] == 392)
      assert(X.shape[1] == 8)
      assert(y.shape[0] == 392)
      
  #def test_import_mnist_data():
  #    X, y = mnist_data()
  #    assert(X.shape[0] == 5000)
  #    assert(X.shape[1] == 784)
  #    assert(y.shape[0] == 5000)
new_contents: from mlxtend.data import iris_data
  from mlxtend.data import wine_data
  from mlxtend.data import autompg_data
  from mlxtend.data import mnist_data
  
  def test_import_wine_data():
      X, y = wine_data()
      assert(X.shape[0] == 178)
      assert(X.shape[1] == 13)
      assert(y.shape[0] == 178)
  
  def test_import_iris_data():
      X, y = iris_data()
      assert(X.shape[0] == 150)
      assert(X.shape[1] == 4)
      assert(y.shape[0] == 150)
  
  def test_import_autompg_data():
      X, y = autompg_data()
      assert(X.shape[0] == 392)
      assert(X.shape[1] == 8)
      assert(y.shape[0] == 392)
      
  def test_import_mnist_data():
      X, y = mnist_data()
      assert(X.shape[0] == 5000)
      assert(X.shape[1] == 784)
      assert(y.shape[0] == 5000)
subject: test mnist again