found cases of 'import nose' , and also, use of

pizzathief · pizzathief · commit 23cee6a3014a · 2016-01-22T17:56:50.000+11:00
a decorator called 'knownfailureif' removed, and
replaced with pytest versions if necessary.
diff --git a/lib/matplotlib/tests/test_artist.py b/lib/matplotlib/tests/test_artist.py
@@ -206,4 +206,3 @@ def test_properties():
         warnings.simplefilter("always")
         ln.properties()
         assert len(w) == 0
-
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -2203,7 +2203,6 @@ def test_errorbar():
 
     fig.suptitle('Variable errorbars')
 
-
     # Reuse te first testcase from above for a labeled data test
     data = {"x": x, "y": y}
     fig = plt.figure()
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
@@ -12,8 +12,10 @@
 from matplotlib.transforms import Bbox
 from matplotlib import rcParams, rc_context
 import matplotlib.pyplot as plt
-
-from numpy.testing import assert_array_equal
+from numpy.testing import assert_array_equal, assert_array_almost_equal
+import pytest
+import io
+import os
 
 try:
     from PIL import Image
diff --git a/lib/matplotlib/tests/test_rcparams.py b/lib/matplotlib/tests/test_rcparams.py
@@ -13,7 +13,7 @@
 import matplotlib as mpl
 import matplotlib.pyplot as plt
 from matplotlib.tests import assert_str_equal
-from matplotlib.testing.decorators import cleanup, knownfailureif
+from matplotlib.testing.decorators import cleanup
 import matplotlib.colors as mcolors
 # from nose.tools import assert_true, assert_raises, assert_equal
 # from nose.plugins.skip import SkipTest
