STYLE: Fix missing whitespace after keyword

* Missing whitespace after keyword
  See https://www.flake8rules.com/rules/E275.html

Applications/SlicerApp/Testing/Python/DWMRIMultishellIOTests.py

@@ -30,7 +30,7 @@ def parse_nhdr(path):
 
     with open(path) as f:
         magic = f.readline().strip()
-        assert(magic == "NRRD0005")
+        assert magic == "NRRD0005"
 
         while True:
             line = f.readline()
@@ -40,13 +40,13 @@ def parse_nhdr(path):
 
             # careful about precedence -- ":=" must match first
             key, val = (x.strip() for x in re.split(":=|=|:", line))
-            assert(key not in kvdict)
+            assert key not in kvdict
             kvdict[key] = val
 
             if key.startswith(dwmri_grad_keybase):
                 _gn = int(key[len(dwmri_grad_keybase):None])
                 # monotonic keys
-                assert(_gn == grad_count)  # offset
+                assert _gn == grad_count  # offset
                 grad_count += 1
 
         bvalue = float(kvdict[dwmri_bval_key])
@@ -94,7 +94,7 @@ def test_nrrd_dwi_load(first_file, second_file=None):
     ##################################
     # 1) check the number of gradients
 
-    assert(len(parsed_nrrd.gradients) == slicer_numgrads)
+    assert len(parsed_nrrd.gradients) == slicer_numgrads
 
     ##################################
     # 2) check the node b values and gradients are correct

Applications/SlicerApp/Testing/Python/ScriptedModuleCleanupTest.py

@@ -75,12 +75,12 @@ def check_exit_code(slicer_executable, testing_enabled=True, debug=False):
             args.append('--exit-after-startup')
         (returnCode, stdout, stderr) = run(slicer_executable, args)
 
-        assert(os.path.isfile(test_output_file))
+        assert os.path.isfile(test_output_file)
 
         if testing_enabled:
-            assert(returnCode == EXIT_FAILURE)
+            assert returnCode == EXIT_FAILURE
         else:
-            assert(returnCode == EXIT_SUCCESS)
+            assert returnCode == EXIT_SUCCESS
 
     finally:
         if not debug:

Applications/SlicerApp/Testing/Python/SlicerStartupCompletedTest.py

@@ -72,17 +72,17 @@
         # Test startupCompleted with main window
         args = list(common_args)
         (returnCode, stdout, stderr) = runSlicerAndExit(slicer_executable, args)
-        assert(os.path.isfile(test_output_file))
+        assert os.path.isfile(test_output_file)
         os.remove(test_output_file)
-        assert(returnCode == EXIT_SUCCESS)
+        assert returnCode == EXIT_SUCCESS
         print("Test startupCompleted with main window - passed\n")
 
         # Test startupCompleted without main window
         args = list(common_args)
         args.extend(['--no-main-window'])
         (returnCode, stdout, stderr) = runSlicerAndExit(slicer_executable, args)
-        assert(os.path.isfile(test_output_file))
-        assert(returnCode == EXIT_SUCCESS)
+        assert os.path.isfile(test_output_file)
+        assert returnCode == EXIT_SUCCESS
         print("Test startupCompleted without main window - passed\n")
 
     finally:

Modules/Loadable/Markups/Testing/Python/MarkupsInViewsSelfTest.py

@@ -196,8 +196,8 @@ def run(self):
         nose = [4.61944, 114.526, -33.2143]
         controlPointIndex = fidNode.AddControlPoint(eye1)
         slicer.nodeEvents = self.nodeEvents
-        assert(len(self.nodeEvents) == 1)
-        assert(self.nodeEvents[0] == slicer.vtkMRMLMarkupsNode.PointPositionDefinedEvent)
+        assert len(self.nodeEvents) == 1
+        assert self.nodeEvents[0] == slicer.vtkMRMLMarkupsNode.PointPositionDefinedEvent
         fidNode.SetNthControlPointLabel(controlPointIndex, "eye-1")
         controlPointIndex = fidNode.AddControlPoint(eye2)
         fidNode.SetNthControlPointLabel(controlPointIndex, "eye-2")

Modules/Scripted/DICOMLib/DICOMPlugin.py

@@ -123,7 +123,7 @@ def hashFiles(self, files):
         for f in files:
             # Unicode-objects must be encoded before hashing
             m.update(f.encode('UTF-8', 'ignore'))
-        return(m.digest())
+        return m.digest()
 
     def getCachedLoadables(self, files):
         """ Helper method to access the results of a previous

Modules/Scripted/DICOMPlugins/DICOMScalarVolumePlugin.py

@@ -365,7 +365,7 @@ def loadFilesWithArchetype(self, files, name):
         for f in files:
             fileList.InsertNextValue(f)
         volumesLogic = slicer.modules.volumes.logic()
-        return(volumesLogic.AddArchetypeScalarVolume(files[0], name, 0, fileList))
+        return volumesLogic.AddArchetypeScalarVolume(files[0], name, 0, fileList)
 
     def loadFilesWithSeriesReader(self, imageIOName, files, name, grayscale=True):
         """ Explicitly use the named imageIO to perform the loading
@@ -416,7 +416,7 @@ def loadFilesWithSeriesReader(self, imageIOName, files, name, grayscale=True):
         slicer.modules.DICOMInstance.reader = reader
         slicer.modules.DICOMInstance.imageChangeInformation = imageChangeInformation
 
-        return(volumeNode)
+        return volumeNode
 
     def setVolumeNodeProperties(self, volumeNode, loadable):
         """After the scalar volume has been loaded, populate the node

Modules/Scripted/VectorToScalarVolume/VectorToScalarVolume.py

@@ -353,7 +353,7 @@ def isValidInputOutputData(inputVolumeNode, outputVolumeNode, conversionMethod,
         # SINGLE_COMPONENT: Check that input has enough components for the given componentToExtract
         if conversionMethod == VectorToScalarVolumeLogic.SINGLE_COMPONENT:
             # componentToExtract is an index with valid values in the range: [0, numberOfComponents-1]
-            if not(0 <= componentToExtract < numberOfComponents):
+            if not 0 <= componentToExtract < numberOfComponents:
                 msg = 'componentToExtract %d is invalid. Image has only %d components.' % (componentToExtract, numberOfComponents)
                 logging.debug("isValidInputOutputData failed: %s" % msg)
                 return False, msg