codestyle

tests/calc/test_indices.py

@@ -175,13 +175,16 @@ def test_bunkers_motion():
              6.90054376] * units('m/s')
     assert_almost_equal(motion.flatten(), truth, 8)
 
+
 def test_bunkers_motion_with_nans():
     """Test Bunkers storm motion with observed sounding."""
     data = get_upper_air_data(datetime(2016, 5, 22, 0), 'DDC')
-    data['u_wind'][24:26] = np.nan
-    data['v_wind'][24:26] = np.nan
+    u_with_nan = data['u_wind']
+    u_with_nan[24:26] = np.nan
+    v_with_nan = data['v_wind']
+    v_with_nan[24:26] = np.nan
     motion = concatenate(bunkers_storm_motion(data['pressure'],
-                         data['u_wind'], data['v_wind'],
+                         u_with_nan, v_with_nan,
                          data['height']))
     truth = [2.09232447, 0.97612357, 11.25513401, 12.85227283, 6.67372924,
              6.9141982] * units('m/s')