matplotlib
diff --git a/‎lib/matplotlib/testing/exceptions.py
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+11-5Lines changed: 11 additions & 5 deletions b/‎lib/matplotlib/testing/exceptions.py
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+11-5Lines changed: 11 additions & 5 deletions
diff --git a/‎lib/matplotlib/testing/noseclasses.py
Copy file name to clipboardExpand all lines: lib/matplotlib/testing/noseclasses.py
+2-1Lines changed: 2 additions & 1 deletion b/‎lib/matplotlib/testing/noseclasses.py
Copy file name to clipboardExpand all lines: lib/matplotlib/testing/noseclasses.py
+2-1Lines changed: 2 additions & 1 deletion
@@ -1,10 +1,16 @@
 class KnownFailureTest(Exception):
-    '''Raise this exception to mark a test as a known failing test.'''
-    pass
+    """
+    Raise this exception to mark a test as a known failing test.
+    """
+
 
 class KnownFailureDidNotFailTest(Exception):
-    '''Raise this exception to mark a test should have failed but did not.'''
-    pass
+    """
+    Raise this exception to mark a test should have failed but did not.
+    """
+
 
 class ImageComparisonFailure(AssertionError):
-    '''Raise this exception to mark a test as a comparison between two images.'''
+    """
+    Raise this exception to mark a test as a comparison between two images.
+    """
@@ -9,6 +9,7 @@
                                            KnownFailureDidNotFailTest,
                                            ImageComparisonFailure)
 
+
 class KnownFailure(ErrorClassPlugin):
     '''Plugin that installs a KNOWNFAIL error class for the
     KnownFailureClass exception.  When KnownFailureTest is raised,
@@ -38,7 +39,7 @@ def configure(self, options, conf):
         if disable:
             self.enabled = False
 
-    def addError( self, test, err, *zero_nine_capt_args ):
+    def addError(self, test, err, *zero_nine_capt_args):
         # Fixme (Really weird): if I don't leave empty method here,
         # nose gets confused and KnownFails become testing errors when
         # using the MplNosePlugin and MplTestCase.