diff --git a/src/App/FreeCADInit.py b/src/App/FreeCADInit.py
index 50563e3333..93173ef67b 100644
--- a/src/App/FreeCADInit.py
+++ b/src/App/FreeCADInit.py
@@ -192,7 +192,6 @@ def InitApplications():
 			PathEnvironment += path + os.pathsep
 		except UnicodeDecodeError:
 			Wrn('Filter invalid module path: u{}\n'.format(repr(path)))
-			pass
 
 	# new paths must be prepended to avoid to load a wrong version of a library
 	try:
diff --git a/src/Mod/Import/stepZ.py b/src/Mod/Import/stepZ.py
index 29a8916976..2d29fb81a9 100644
--- a/src/Mod/Import/stepZ.py
+++ b/src/Mod/Import/stepZ.py
@@ -105,7 +105,6 @@ def import_stpz(fn,fc,doc):
         os.remove(tempfilepath)
     except OSError:
         sayzerr("error on removing "+tempfilepath+" file")
-        pass
 ###
 
 def open(filename,doc=None):
diff --git a/src/Mod/OpenSCAD/OpenSCADCommands.py b/src/Mod/OpenSCAD/OpenSCADCommands.py
index 30f45add66..f421fea7a8 100644
--- a/src/Mod/OpenSCAD/OpenSCADCommands.py
+++ b/src/Mod/OpenSCAD/OpenSCADCommands.py
@@ -327,7 +327,6 @@ class OpenSCADMeshBooleanWidget(QtGui.QWidget):
 
 class OpenSCADMeshBooleanTask:
     def __init__(self):
-        pass
         self.form = OpenSCADMeshBooleanWidget()
         self.form.buttonadd.clicked.connect(self.doboolean)
     def getStandardButtons(self):