code: def fit(self, X, y):
          
  
          X = np.array(X, dtype=np.float32)
          y = np.array(y, dtype=np.float32)
          assert X.shape[0] == y.shape[0]
  
          return X, y
docs: Fits the given model to the data and labels provided.
          
          Parameters:
          -----------
          X : matrix, shape (n_samples, n_features)
          The samples, the train data.
  
          y : vector, shape (n_samples,)
          The target labels.
          
          Returns:
          --------
          self : instance of the model itself (`self`)