fix import mismatch

Author: rasbt

mlxtend/feature_selection/tests/test_sequential_feature_selector_feature_groups.py

@@ -3,16 +3,15 @@
 # Author: Sebastian Raschka <sebastianraschka.com>
 #
 # License: BSD 3 clause
-from mlxtend.data import boston_housing_data
 import numpy as np
-from numpy import nan
 from numpy.testing import assert_almost_equal
 from sklearn.datasets import load_iris
 from sklearn.ensemble import RandomForestClassifier
 from sklearn.linear_model import LinearRegression
 from sklearn.metrics import roc_auc_score
 from sklearn.neighbors import KNeighborsClassifier
 
+from mlxtend.data import boston_housing_data
 from mlxtend.feature_selection import SequentialFeatureSelector as SFS
 from mlxtend.utils import assert_raises
 
@@ -163,8 +162,7 @@ def test_keyboard_interrupt():
 
 
 def test_max_feature_subset_best():
-    boston = load_boston()
-    X, y = boston.data, boston.target
+    X, y = boston_housing_data
     lr = LinearRegression()
 
     sfs = SFS(
@@ -189,8 +187,7 @@ def test_max_feature_subset_best():
 
 
 def test_max_feature_subset_parsimonious():
-    boston = load_boston()
-    X, y = boston.data, boston.target
+    X, y = boston_housing_data
     lr = LinearRegression()
 
     sfs = SFS(