diff --git a/src/Mod/BIM/bimcommands/BimArchUtils.py b/src/Mod/BIM/bimcommands/BimArchUtils.py
index 9b31ef04d4..ec3de06802 100644
--- a/src/Mod/BIM/bimcommands/BimArchUtils.py
+++ b/src/Mod/BIM/bimcommands/BimArchUtils.py
@@ -22,18 +22,15 @@
 
 """Misc Arch util commands"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
-
-
 class Arch_Add:
     "the Arch Add command definition"
 
diff --git a/src/Mod/BIM/bimcommands/BimAxis.py b/src/Mod/BIM/bimcommands/BimAxis.py
index debbcf3682..fb23223dee 100644
--- a/src/Mod/BIM/bimcommands/BimAxis.py
+++ b/src/Mod/BIM/bimcommands/BimAxis.py
@@ -22,16 +22,16 @@
 
 """The BIM Axis-related commands"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
+
 class Arch_Axis:
 
     "the Arch Axis command definition"
diff --git a/src/Mod/BIM/bimcommands/BimBackground.py b/src/Mod/BIM/bimcommands/BimBackground.py
index 9f9051fe84..eceeadd664 100644
--- a/src/Mod/BIM/bimcommands/BimBackground.py
+++ b/src/Mod/BIM/bimcommands/BimBackground.py
@@ -24,7 +24,6 @@
 
 """The BIM Background command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimBox.py b/src/Mod/BIM/bimcommands/BimBox.py
index 82968934b6..1d35a71545 100644
--- a/src/Mod/BIM/bimcommands/BimBox.py
+++ b/src/Mod/BIM/bimcommands/BimBox.py
@@ -23,7 +23,6 @@
 
 """The BIM Box command"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -141,7 +140,7 @@ class BIM_Box:
     def taskbox(self):
         "sets up a taskbox widget"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         wid = QtGui.QWidget()
         ui = FreeCADGui.UiLoader()
diff --git a/src/Mod/BIM/bimcommands/BimBuilder.py b/src/Mod/BIM/bimcommands/BimBuilder.py
index b007a6cbdc..21528447db 100644
--- a/src/Mod/BIM/bimcommands/BimBuilder.py
+++ b/src/Mod/BIM/bimcommands/BimBuilder.py
@@ -24,7 +24,6 @@
 
 """The BIM Builder command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -43,7 +42,6 @@ class BIM_Builder:
         }
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Builder")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimBuildingPart.py b/src/Mod/BIM/bimcommands/BimBuildingPart.py
index e90326e7e8..bacc2b2d7f 100644
--- a/src/Mod/BIM/bimcommands/BimBuildingPart.py
+++ b/src/Mod/BIM/bimcommands/BimBuildingPart.py
@@ -25,12 +25,12 @@
 # TODO: Refactor the Site code so it becomes a BuildingPart too
 
 
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -56,7 +56,7 @@ class Arch_Level:
         FreeCADGui.addModule("Arch")
         FreeCADGui.addModule("Draft")
         FreeCADGui.addModule("WorkingPlane")
-        FreeCADGui.doCommand("obj = Arch.makeFloor(FreeCADGui.Selection.getSelection())") 
+        FreeCADGui.doCommand("obj = Arch.makeFloor(FreeCADGui.Selection.getSelection())")
         FreeCADGui.doCommand("obj.Placement = WorkingPlane.get_working_plane().get_placement()")
         FreeCADGui.doCommand("Draft.autogroup(obj)")
         FreeCAD.ActiveDocument.commitTransaction()
diff --git a/src/Mod/BIM/bimcommands/BimClassification.py b/src/Mod/BIM/bimcommands/BimClassification.py
index 32c1efed23..e0c272b5b4 100644
--- a/src/Mod/BIM/bimcommands/BimClassification.py
+++ b/src/Mod/BIM/bimcommands/BimClassification.py
@@ -22,13 +22,14 @@
 
 """The BIM Classification command"""
 
+import os
 
 import FreeCAD
 import FreeCADGui
-import os
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -306,7 +307,7 @@ class BIM_Classification:
         # self.spanTopLevels()
 
     def updateByTree(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         # order by hierarchy
         def istop(obj):
@@ -368,8 +369,8 @@ class BIM_Classification:
         self.form.treeObjects.expandAll()
 
     def updateDefault(self):
+        from PySide import QtGui
         import Draft
-        from PySide import QtCore, QtGui
 
         d = self.objectslist.copy()
         d.update(self.matlist)
@@ -389,7 +390,7 @@ class BIM_Classification:
                         self.form.treeObjects.setCurrentItem(it)
 
     def updateClasses(self, search=""):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.form.treeClass.clear()
 
@@ -436,7 +437,7 @@ class BIM_Classification:
                 first = False
 
     def addChildren(self, children, parent, search=""):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         if children:
             for c in children:
@@ -526,7 +527,8 @@ class BIM_Classification:
         )
         if not os.path.exists(preset):
             return None
-        import codecs, re
+        import codecs
+        import re
 
         d = Item()
         with codecs.open(preset, "r", "utf-8") as f:
@@ -663,7 +665,7 @@ class BIM_Classification:
     def getIcon(self,obj):
         """returns a QIcon for an object"""
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         import Arch_rc
 
         if hasattr(obj.ViewObject, "Icon"):
diff --git a/src/Mod/BIM/bimcommands/BimCommon.py b/src/Mod/BIM/bimcommands/BimCommon.py
index d3e720b00d..3a464ec276 100644
--- a/src/Mod/BIM/bimcommands/BimCommon.py
+++ b/src/Mod/BIM/bimcommands/BimCommon.py
@@ -24,7 +24,6 @@
 
 """The BIM Common command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -47,7 +46,6 @@ class BIM_Common:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Common")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimCompound.py b/src/Mod/BIM/bimcommands/BimCompound.py
index 216fe7fd5e..3f5d2a5366 100644
--- a/src/Mod/BIM/bimcommands/BimCompound.py
+++ b/src/Mod/BIM/bimcommands/BimCompound.py
@@ -24,7 +24,6 @@
 
 """The BIM Compound command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -47,7 +46,6 @@ class BIM_Compound:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Compound")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimConvert.py b/src/Mod/BIM/bimcommands/BimConvert.py
index 79377e2c30..8dac4243bd 100644
--- a/src/Mod/BIM/bimcommands/BimConvert.py
+++ b/src/Mod/BIM/bimcommands/BimConvert.py
@@ -24,7 +24,6 @@
 
 """The BIM Convert command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimCurtainwall.py b/src/Mod/BIM/bimcommands/BimCurtainwall.py
index 7dd821d0e1..d88e75ba1e 100644
--- a/src/Mod/BIM/bimcommands/BimCurtainwall.py
+++ b/src/Mod/BIM/bimcommands/BimCurtainwall.py
@@ -22,13 +22,12 @@
 
 """Misc Arch util commands"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimCut.py b/src/Mod/BIM/bimcommands/BimCut.py
index e9dca8d967..99b8086eb5 100644
--- a/src/Mod/BIM/bimcommands/BimCut.py
+++ b/src/Mod/BIM/bimcommands/BimCut.py
@@ -24,7 +24,6 @@
 
 """The BIM Cut command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -46,7 +45,6 @@ class BIM_Cut:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Cut")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimCutPlane.py b/src/Mod/BIM/bimcommands/BimCutPlane.py
index a19280a8ec..36d3b8abef 100644
--- a/src/Mod/BIM/bimcommands/BimCutPlane.py
+++ b/src/Mod/BIM/bimcommands/BimCutPlane.py
@@ -23,13 +23,12 @@
 
 """The Arch CutPlane command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimDiff.py b/src/Mod/BIM/bimcommands/BimDiff.py
index 0205a52f93..ef1c8f4724 100644
--- a/src/Mod/BIM/bimcommands/BimDiff.py
+++ b/src/Mod/BIM/bimcommands/BimDiff.py
@@ -22,7 +22,6 @@
 
 """The BIM Diff command"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -49,7 +48,7 @@ class BIM_Diff:
         # make the main doc the active one before running this script!
 
         # what will be compared: IDs, geometry, materials. Everything else is discarded.
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         import Draft
 
         MOVE_TOLERANCE = 0.2  # the max allowed move in mm
diff --git a/src/Mod/BIM/bimcommands/BimDimensions.py b/src/Mod/BIM/bimcommands/BimDimensions.py
index 18a8bd8f98..e700f70fdb 100644
--- a/src/Mod/BIM/bimcommands/BimDimensions.py
+++ b/src/Mod/BIM/bimcommands/BimDimensions.py
@@ -24,9 +24,9 @@
 
 """The BIM DimensionAligned command"""
 
-
 import FreeCAD
 import FreeCADGui
+
 from draftguitools import gui_dimensions
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
diff --git a/src/Mod/BIM/bimcommands/BimDoor.py b/src/Mod/BIM/bimcommands/BimDoor.py
index d6598fce1d..4a28b73022 100644
--- a/src/Mod/BIM/bimcommands/BimDoor.py
+++ b/src/Mod/BIM/bimcommands/BimDoor.py
@@ -24,7 +24,6 @@
 
 """The BIM Door command"""
 
-
 import FreeCAD
 import FreeCADGui
 from bimcommands import BimWindow
diff --git a/src/Mod/BIM/bimcommands/BimDrawingView.py b/src/Mod/BIM/bimcommands/BimDrawingView.py
index 637a68fd01..7635e33cd7 100644
--- a/src/Mod/BIM/bimcommands/BimDrawingView.py
+++ b/src/Mod/BIM/bimcommands/BimDrawingView.py
@@ -22,14 +22,12 @@
 
 """The BIM DrawingView command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
-from bimcommands import BimBuildingPart
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimEmptyTrash.py b/src/Mod/BIM/bimcommands/BimEmptyTrash.py
index 5feeb10cff..4f2053cf63 100644
--- a/src/Mod/BIM/bimcommands/BimEmptyTrash.py
+++ b/src/Mod/BIM/bimcommands/BimEmptyTrash.py
@@ -24,7 +24,6 @@
 
 """The BIM EmptyTrash command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimEquipment.py b/src/Mod/BIM/bimcommands/BimEquipment.py
index e0bc19f7a7..09c215a751 100644
--- a/src/Mod/BIM/bimcommands/BimEquipment.py
+++ b/src/Mod/BIM/bimcommands/BimEquipment.py
@@ -22,13 +22,12 @@
 
 """BIM equipment commands"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimExamples.py b/src/Mod/BIM/bimcommands/BimExamples.py
index 6661f47308..cb1c4c9102 100644
--- a/src/Mod/BIM/bimcommands/BimExamples.py
+++ b/src/Mod/BIM/bimcommands/BimExamples.py
@@ -24,7 +24,6 @@
 
 """The BIM Examples command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -44,7 +43,7 @@ class BIM_Examples:
         }
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         QtGui.QDesktopServices.openUrl("https://github.com/yorikvanhavre/FreeCAD-BIM-examples")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimExtrude.py b/src/Mod/BIM/bimcommands/BimExtrude.py
index 6a37b4cd62..fad47e8439 100644
--- a/src/Mod/BIM/bimcommands/BimExtrude.py
+++ b/src/Mod/BIM/bimcommands/BimExtrude.py
@@ -24,7 +24,6 @@
 
 """The BIM Extrude command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -45,7 +44,6 @@ class BIM_Extrude:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Extrude")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimFence.py b/src/Mod/BIM/bimcommands/BimFence.py
index 2592c32c13..18ee964541 100644
--- a/src/Mod/BIM/bimcommands/BimFence.py
+++ b/src/Mod/BIM/bimcommands/BimFence.py
@@ -22,13 +22,12 @@
 
 """BIM fence command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimFrame.py b/src/Mod/BIM/bimcommands/BimFrame.py
index da946eb765..8009cac553 100644
--- a/src/Mod/BIM/bimcommands/BimFrame.py
+++ b/src/Mod/BIM/bimcommands/BimFrame.py
@@ -22,13 +22,12 @@
 
 """BIM Frame command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -62,4 +61,3 @@ class Arch_Frame:
 
 
 FreeCADGui.addCommand('Arch_Frame',Arch_Frame())
-
diff --git a/src/Mod/BIM/bimcommands/BimFuse.py b/src/Mod/BIM/bimcommands/BimFuse.py
index b33b1edca9..dbacdaf23d 100644
--- a/src/Mod/BIM/bimcommands/BimFuse.py
+++ b/src/Mod/BIM/bimcommands/BimFuse.py
@@ -24,7 +24,6 @@
 
 """The BIM Fuse command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -44,7 +43,6 @@ class BIM_Fuse:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Fuse")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimGlue.py b/src/Mod/BIM/bimcommands/BimGlue.py
index 81f2534978..9300d521ad 100644
--- a/src/Mod/BIM/bimcommands/BimGlue.py
+++ b/src/Mod/BIM/bimcommands/BimGlue.py
@@ -24,7 +24,6 @@
 
 """The BIM Glue command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimHelp.py b/src/Mod/BIM/bimcommands/BimHelp.py
index 1df2bdb66b..0cda131f23 100644
--- a/src/Mod/BIM/bimcommands/BimHelp.py
+++ b/src/Mod/BIM/bimcommands/BimHelp.py
@@ -24,7 +24,6 @@
 
 """The BIM Help command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -44,7 +43,7 @@ class BIM_Help:
         }
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         QtGui.QDesktopServices.openUrl("https://www.freecadweb.org/wiki/BIM_Workbench")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimIfcElements.py b/src/Mod/BIM/bimcommands/BimIfcElements.py
index 123afb057b..5192271d7e 100644
--- a/src/Mod/BIM/bimcommands/BimIfcElements.py
+++ b/src/Mod/BIM/bimcommands/BimIfcElements.py
@@ -24,7 +24,6 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -50,7 +49,7 @@ class BIM_IfcElements:
 
     def Activated(self):
         import Draft
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         # build objects list
         self.objectslist = {}
@@ -634,7 +633,7 @@ if FreeCAD.GuiUp:
 def getIcon(obj):
     """returns a QIcon for an object"""
 
-    from PySide import QtCore, QtGui
+    from PySide import QtGui
     import Arch_rc
 
     if hasattr(obj.ViewObject, "Icon"):
diff --git a/src/Mod/BIM/bimcommands/BimIfcExplorer.py b/src/Mod/BIM/bimcommands/BimIfcExplorer.py
index fc772f8976..cb96f40af3 100644
--- a/src/Mod/BIM/bimcommands/BimIfcExplorer.py
+++ b/src/Mod/BIM/bimcommands/BimIfcExplorer.py
@@ -21,6 +21,7 @@
 # ***************************************************************************
 
 import os
+
 import FreeCAD
 import FreeCADGui
 
@@ -44,7 +45,7 @@ class BIM_IfcExplorer:
 
     def Activated(self):
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         try:
             import ifcopenshell
@@ -174,7 +175,7 @@ class BIM_IfcExplorer:
         "opens a file"
 
         import ifcopenshell
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.filename = ""
         lastfolder = FreeCAD.ParamGet(
@@ -253,7 +254,7 @@ class BIM_IfcExplorer:
         "inserts selected objects in the active document"
 
         from importers import importIFC
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         doc = FreeCAD.ActiveDocument
         if doc and self.filename:
@@ -472,7 +473,7 @@ class BIM_IfcExplorer:
         "adds the attributes of the given IFC entity under the given QTreeWidgetITem"
 
         import ifcopenshell
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         entity = self.ifc[eid]
 
@@ -555,7 +556,7 @@ class BIM_IfcExplorer:
     def addProperties(self, eid, parent):
         "adds properties of a given entity to the given QTReeWidgetItem"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         entity = self.ifc[eid]
         if hasattr(entity, "IsDefinedBy"):
@@ -585,7 +586,7 @@ class BIM_IfcExplorer:
     def onSelectTree(self, item, previous):
         "displays attributes and properties of a tree item"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         self.backnav.append(previous)
         eid = item.data(0, QtCore.Qt.UserRole)
@@ -628,7 +629,7 @@ class BIM_IfcExplorer:
     def onDoubleClickTree(self, item, column):
         "when a property or attribute is double-clicked"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         if self.tree:
             txt = item.text(column)
diff --git a/src/Mod/BIM/bimcommands/BimIfcProperties.py b/src/Mod/BIM/bimcommands/BimIfcProperties.py
index 02a8f42b16..9bb01e3fbe 100644
--- a/src/Mod/BIM/bimcommands/BimIfcProperties.py
+++ b/src/Mod/BIM/bimcommands/BimIfcProperties.py
@@ -26,11 +26,13 @@
 
 import os
 import sys
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -53,7 +55,7 @@ class BIM_IfcProperties:
         return v
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         try:
             import ArchIFC
@@ -244,7 +246,7 @@ class BIM_IfcProperties:
         return result
 
     def updateByType(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         groups = {}
         for name, role in self.objectslist.items():
@@ -278,7 +280,7 @@ class BIM_IfcProperties:
         self.spanTopLevels()
 
     def updateByTree(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         # order by hierarchy
         def istop(obj):
@@ -336,7 +338,7 @@ class BIM_IfcProperties:
         self.form.tree.expandAll()
 
     def updateDefault(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         for name, role in self.objectslist.items():
             role = role[0]
@@ -432,7 +434,7 @@ class BIM_IfcProperties:
         return props
 
     def getSearchResults(self, obj):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         text = self.form.searchField.currentText()
         if not text:
@@ -465,7 +467,7 @@ class BIM_IfcProperties:
                 return QtGui.QStandardItem()
 
     def updateProperties(self, sel1=None, sel2=None):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.propmodel.clear()
         self.propmodel.setHorizontalHeaderLabels(
@@ -628,7 +630,7 @@ class BIM_IfcProperties:
                                 del self.objectslist[name][1][prop]
 
     def addProperty(self, idx=0, pset=None, prop=None, ptype=None):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         if not self.form.tree.selectedIndexes():
             return
@@ -685,7 +687,7 @@ class BIM_IfcProperties:
             self.form.comboProperty.setCurrentIndex(0)
 
     def addPset(self, idx):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         if not self.form.tree.selectedIndexes():
             return
@@ -732,7 +734,7 @@ class BIM_IfcProperties:
             self.form.comboPset.setCurrentIndex(0)
 
     def removeProperty(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         sel = self.form.treeProperties.selectedIndexes()
         remove = []
@@ -764,7 +766,7 @@ class BIM_IfcProperties:
 
 
 if FreeCAD.GuiUp:
-    from PySide import QtCore, QtGui
+    from PySide import QtGui
 
     class propertiesDelegate(QtGui.QStyledItemDelegate):
         def __init__(self, parent=None, container=None, ptypes=[], plabels=[], *args):
diff --git a/src/Mod/BIM/bimcommands/BimIfcQuantities.py b/src/Mod/BIM/bimcommands/BimIfcQuantities.py
index f1ea3d0b19..36678c5f10 100644
--- a/src/Mod/BIM/bimcommands/BimIfcQuantities.py
+++ b/src/Mod/BIM/bimcommands/BimIfcQuantities.py
@@ -24,13 +24,15 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import csv
+import os
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 QPROPS = [
@@ -81,7 +83,7 @@ class BIM_IfcQuantities:
         return v
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         # build objects list
         self.objectslist = {}
@@ -329,7 +331,7 @@ class BIM_IfcQuantities:
         """Updates a single line of the table, without updating
         the actual object"""
 
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         i = self.get_row(name)
         if i == -1:
diff --git a/src/Mod/BIM/bimcommands/BimImagePlane.py b/src/Mod/BIM/bimcommands/BimImagePlane.py
index f171639c09..4d35e51cf7 100644
--- a/src/Mod/BIM/bimcommands/BimImagePlane.py
+++ b/src/Mod/BIM/bimcommands/BimImagePlane.py
@@ -24,7 +24,6 @@
 
 """The BIM ImagePlane command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimLayers.py b/src/Mod/BIM/bimcommands/BimLayers.py
index 4ad159229b..236af77e50 100644
--- a/src/Mod/BIM/bimcommands/BimLayers.py
+++ b/src/Mod/BIM/bimcommands/BimLayers.py
@@ -22,12 +22,12 @@
 
 """Layers manager for FreeCAD"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -35,7 +35,7 @@ def getColorIcon(color):
 
     "returns a QtGui.QIcon from a color 3-float tuple"
 
-    from PySide import QtCore, QtGui
+    from PySide import QtGui
 
     c = QtGui.QColor(int(color[0] * 255), int(color[1] * 255), int(color[2] * 255))
     im = QtGui.QImage(48, 48, QtGui.QImage.Format_ARGB32)
@@ -64,7 +64,7 @@ class BIM_Layers:
 
     def Activated(self):
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         # store changes to be committed
         self.deleteList = []
@@ -441,7 +441,7 @@ class BIM_Layers:
     def onToggle(self):
         "toggle selected layers on/off"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         state = None
         for index in self.dialog.tree.selectedIndexes():
@@ -460,7 +460,7 @@ class BIM_Layers:
     def onIsolate(self):
         "isolates the selected layers (turns all the others off"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         onrows = []
         for index in self.dialog.tree.selectedIndexes():
@@ -473,7 +473,7 @@ class BIM_Layers:
     def onIFC(self):
         "attributes this layer to an IFC project"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         for index in self.dialog.tree.selectedIndexes():
             if index.column() == 1:
diff --git a/src/Mod/BIM/bimcommands/BimLeader.py b/src/Mod/BIM/bimcommands/BimLeader.py
index 6f65590b79..f76b21ce10 100644
--- a/src/Mod/BIM/bimcommands/BimLeader.py
+++ b/src/Mod/BIM/bimcommands/BimLeader.py
@@ -24,9 +24,9 @@
 
 """The BIM Leader command"""
 
-
 import FreeCAD
 import FreeCADGui
+
 from draftguitools import gui_lines  # Line tool from Draft
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
diff --git a/src/Mod/BIM/bimcommands/BimLibrary.py b/src/Mod/BIM/bimcommands/BimLibrary.py
index 40c9607ee9..a781aeb82f 100644
--- a/src/Mod/BIM/bimcommands/BimLibrary.py
+++ b/src/Mod/BIM/bimcommands/BimLibrary.py
@@ -25,13 +25,15 @@ from __future__ import print_function
 
 """The BIM library tool"""
 
-import sys
 import os
+import sys
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 FILTERS = [
@@ -108,7 +110,7 @@ class BIM_Library_TaskPanel:
 
     def __init__(self, offlinemode=False):
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.mainDocName = FreeCAD.Gui.ActiveDocument.Document.Name
         self.previewDocName = "Viewer"
@@ -345,7 +347,9 @@ class BIM_Library_TaskPanel:
     def addtolibrary(self):
         # DISABLED
 
-        import Part, Mesh, os
+        import os
+        import Mesh
+        import Part
 
         self.fileDialog = QtGui.QFileDialog.getSaveFileName(
             None, "Save As", self.librarypath
@@ -380,7 +384,6 @@ class BIM_Library_TaskPanel:
 
     def setSearchModel(self, text):
 
-        import PartGui
         from PySide import QtGui
 
         def add_line(f, dp):
@@ -445,7 +448,6 @@ class BIM_Library_TaskPanel:
     def setOnlineModel(self):
 
         from PySide import QtGui
-        import PartGui
 
         def addItems(root, d, path):
             for k, v in d.items():
@@ -813,8 +815,8 @@ class BIM_Library_TaskPanel:
     def getOnlineContentsAPI(self, url):
         """same as getOnlineContents but uses github API (faster)"""
 
-        import requests
         import json
+        import requests
 
         result = {}
         count = 0
diff --git a/src/Mod/BIM/bimcommands/BimMaterial.py b/src/Mod/BIM/bimcommands/BimMaterial.py
index 29061417e7..581c4852b7 100644
--- a/src/Mod/BIM/bimcommands/BimMaterial.py
+++ b/src/Mod/BIM/bimcommands/BimMaterial.py
@@ -22,12 +22,12 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 if FreeCAD.GuiUp:
diff --git a/src/Mod/BIM/bimcommands/BimNudge.py b/src/Mod/BIM/bimcommands/BimNudge.py
index 25186739f6..4d74d2338c 100644
--- a/src/Mod/BIM/bimcommands/BimNudge.py
+++ b/src/Mod/BIM/bimcommands/BimNudge.py
@@ -22,7 +22,6 @@
 
 """BIM nudge commands"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -36,7 +35,7 @@ class BIM_Nudge:
     def getNudgeValue(self, mode):
         "mode can be dist, up, down, left, right. dist returns a float in mm, other modes return a 3D vector"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         mw = FreeCADGui.getMainWindow()
         if mw:
@@ -136,7 +135,7 @@ class BIM_Nudge_Switch(BIM_Nudge):
         }
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         mw = FreeCADGui.getMainWindow()
         if mw:
diff --git a/src/Mod/BIM/bimcommands/BimOffset.py b/src/Mod/BIM/bimcommands/BimOffset.py
index 406d629882..8cfc912b48 100644
--- a/src/Mod/BIM/bimcommands/BimOffset.py
+++ b/src/Mod/BIM/bimcommands/BimOffset.py
@@ -24,7 +24,6 @@
 
 """The BIM Offset command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -46,7 +45,6 @@ class BIM_Offset2D:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_Offset2D")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimPanel.py b/src/Mod/BIM/bimcommands/BimPanel.py
index c0cbb7352f..f4f8c78203 100644
--- a/src/Mod/BIM/bimcommands/BimPanel.py
+++ b/src/Mod/BIM/bimcommands/BimPanel.py
@@ -22,8 +22,6 @@
 
 """BIM Panel-related Arch_"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -334,7 +332,6 @@ class NestTaskPanel:
     def __init__(self,obj=None):
 
         import ArchNesting
-        from PySide import QtCore, QtGui
         self.form = FreeCADGui.PySideUic.loadUi(":/ui/ArchNest.ui")
         self.form.progressBar.hide()
         self.form.ButtonPreview.setEnabled(False)
diff --git a/src/Mod/BIM/bimcommands/BimPipe.py b/src/Mod/BIM/bimcommands/BimPipe.py
index 82bfe2fe1c..4d624a2ae5 100644
--- a/src/Mod/BIM/bimcommands/BimPipe.py
+++ b/src/Mod/BIM/bimcommands/BimPipe.py
@@ -22,13 +22,12 @@
 
 """BIM Panel-related Arch_"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimPreflight.py b/src/Mod/BIM/bimcommands/BimPreflight.py
index 11fc0acdf7..fb28048f19 100644
--- a/src/Mod/BIM/bimcommands/BimPreflight.py
+++ b/src/Mod/BIM/bimcommands/BimPreflight.py
@@ -22,9 +22,11 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-
-import sys
+import importlib
+import inspect
 import os
+import sys
+
 import FreeCAD
 import FreeCADGui
 
@@ -32,10 +34,6 @@ QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
 
 
-import importlib
-import inspect
-
-
 tests = [
     "testAll",
     "testIFC4",
@@ -80,7 +78,7 @@ class BIM_Preflight:
 class BIM_Preflight_TaskPanel:
 
     def __init__(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.results = {}  # to store the result message
         self.culprits = {}  # to store objects to highlight
@@ -156,12 +154,12 @@ class BIM_Preflight_TaskPanel:
                             self.customTests[butname] = func
 
     def getStandardButtons(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         return QtGui.QDialogButtonBox.Close
 
     def reject(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         QtGui.QApplication.restoreOverrideCursor()
         FreeCADGui.Control.closeDialog()
@@ -170,7 +168,7 @@ class BIM_Preflight_TaskPanel:
     def passed(self, test):
         "sets the button as passed"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         getattr(self.form, test).setIcon(QtGui.QIcon(":/icons/button_valid.svg"))
         getattr(self.form, test).setText(translate("BIM", "Passed"))
@@ -181,7 +179,7 @@ class BIM_Preflight_TaskPanel:
     def failed(self, test):
         "sets the button as failed"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         getattr(self.form, test).setIcon(QtGui.QIcon(":/icons/process-stop.svg"))
         getattr(self.form, test).setText("Failed")
@@ -192,7 +190,7 @@ class BIM_Preflight_TaskPanel:
     def reset(self, test):
         "reset the button"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         getattr(self.form, test).setIcon(QtGui.QIcon(":/icons/button_right.svg"))
         getattr(self.form, test).setText(translate("BIM", "Test"))
@@ -293,7 +291,7 @@ class BIM_Preflight_TaskPanel:
     def testAll(self):
         "runs all tests"
 
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         from draftutils import todo
 
         for test in tests:
@@ -698,6 +696,7 @@ class BIM_Preflight_TaskPanel:
     def testQuantities(self):
         "tests for explicit quantities export"
 
+        import Draft
         from PySide import QtCore, QtGui
 
         test = "testQuantities"
diff --git a/src/Mod/BIM/bimcommands/BimProfile.py b/src/Mod/BIM/bimcommands/BimProfile.py
index d6cbc3b8b6..2d71d592e9 100644
--- a/src/Mod/BIM/bimcommands/BimProfile.py
+++ b/src/Mod/BIM/bimcommands/BimProfile.py
@@ -22,13 +22,12 @@
 
 """BIM Panel-related Arch_"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimProject.py b/src/Mod/BIM/bimcommands/BimProject.py
index 3f0f5a705c..9e22957a52 100644
--- a/src/Mod/BIM/bimcommands/BimProject.py
+++ b/src/Mod/BIM/bimcommands/BimProject.py
@@ -24,7 +24,6 @@
 
 """The BIM Project command - Includes previous Arch Project"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimProjectManager.py b/src/Mod/BIM/bimcommands/BimProjectManager.py
index 83213f75df..96041080c6 100644
--- a/src/Mod/BIM/bimcommands/BimProjectManager.py
+++ b/src/Mod/BIM/bimcommands/BimProjectManager.py
@@ -22,10 +22,9 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-
-import os
-import sys
 import math
+import os
+
 import FreeCAD
 import FreeCADGui
 
@@ -49,7 +48,7 @@ class BIM_ProjectManager:
 
         import FreeCADGui
         import ArchBuildingPart
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.form = FreeCADGui.PySideUic.loadUi(":/ui/dialogProjectManager.ui")
         self.project = None
@@ -413,7 +412,7 @@ class BIM_ProjectManager:
 
     def savePreset(self):
         import Arch
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         res = QtGui.QInputDialog.getText(
             None,
@@ -648,7 +647,7 @@ class BIM_ProjectManager:
         )
 
         d.Meta = values
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         filename = QtGui.QFileDialog.getSaveFileName(
             QtGui.QApplication.activeWindow(),
@@ -670,7 +669,7 @@ class BIM_ProjectManager:
         """loads the contents of a template into the current file"""
 
         import FreeCADGui
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         filename = QtGui.QFileDialog.getOpenFileName(
             QtGui.QApplication.activeWindow(),
diff --git a/src/Mod/BIM/bimcommands/BimRebar.py b/src/Mod/BIM/bimcommands/BimRebar.py
index 02bc0cdbee..520041e0ff 100644
--- a/src/Mod/BIM/bimcommands/BimRebar.py
+++ b/src/Mod/BIM/bimcommands/BimRebar.py
@@ -22,13 +22,12 @@
 
 """BIM Rebar command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimReextrude.py b/src/Mod/BIM/bimcommands/BimReextrude.py
index b21f06a51a..efae914e35 100644
--- a/src/Mod/BIM/bimcommands/BimReextrude.py
+++ b/src/Mod/BIM/bimcommands/BimReextrude.py
@@ -24,7 +24,6 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimReference.py b/src/Mod/BIM/bimcommands/BimReference.py
index 0a00ab5478..064581e635 100644
--- a/src/Mod/BIM/bimcommands/BimReference.py
+++ b/src/Mod/BIM/bimcommands/BimReference.py
@@ -22,13 +22,12 @@
 
 """BIM Rebar command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimReorder.py b/src/Mod/BIM/bimcommands/BimReorder.py
index 34eff7841c..d926afbe23 100644
--- a/src/Mod/BIM/bimcommands/BimReorder.py
+++ b/src/Mod/BIM/bimcommands/BimReorder.py
@@ -23,7 +23,6 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -57,7 +56,7 @@ class BIM_Reorder:
 class BIM_Reorder_TaskPanel:
 
     def __init__(self, obj):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.obj = obj
         self.form = FreeCADGui.PySideUic.loadUi(":/ui/dialogReorder.ui")
diff --git a/src/Mod/BIM/bimcommands/BimRewire.py b/src/Mod/BIM/bimcommands/BimRewire.py
index 869bcc6076..a8fda529ee 100644
--- a/src/Mod/BIM/bimcommands/BimRewire.py
+++ b/src/Mod/BIM/bimcommands/BimRewire.py
@@ -24,7 +24,6 @@
 
 """The BIM Rewire command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimRoof.py b/src/Mod/BIM/bimcommands/BimRoof.py
index 97e097be76..029dc0d533 100644
--- a/src/Mod/BIM/bimcommands/BimRoof.py
+++ b/src/Mod/BIM/bimcommands/BimRoof.py
@@ -22,13 +22,12 @@
 
 """BIM Roof command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -83,4 +82,3 @@ class Arch_Roof:
 
 
 FreeCADGui.addCommand("Arch_Roof", Arch_Roof())
-
diff --git a/src/Mod/BIM/bimcommands/BimSchedule.py b/src/Mod/BIM/bimcommands/BimSchedule.py
index 8018925232..2ecfdf1568 100644
--- a/src/Mod/BIM/bimcommands/BimSchedule.py
+++ b/src/Mod/BIM/bimcommands/BimSchedule.py
@@ -22,13 +22,12 @@
 
 """BIM Schedule command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimSectionPlane.py b/src/Mod/BIM/bimcommands/BimSectionPlane.py
index c6a326b27a..89da1c5be1 100644
--- a/src/Mod/BIM/bimcommands/BimSectionPlane.py
+++ b/src/Mod/BIM/bimcommands/BimSectionPlane.py
@@ -22,13 +22,12 @@
 
 """BIM Schedule command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimSetup.py b/src/Mod/BIM/bimcommands/BimSetup.py
index c5ea7ef468..d77b1b4d94 100644
--- a/src/Mod/BIM/bimcommands/BimSetup.py
+++ b/src/Mod/BIM/bimcommands/BimSetup.py
@@ -24,6 +24,7 @@
 
 import os
 import sys
+
 import FreeCAD
 import FreeCADGui
 
@@ -396,7 +397,7 @@ class BIM_Setup:
         )
 
     def setPreset(self, preset=None):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         unit = None
         decimals = None
@@ -650,11 +651,11 @@ class BIM_Setup:
                         ifcok = True
         if not ifcok:
             # ifcopenshell not installed
-            import re
             import json
-            from PySide import QtGui
-            import zipfile
+            import re
             from urllib import request
+            import zipfile
+            from PySide import QtGui
 
             if not FreeCAD.GuiUp:
                 reply = QtGui.QMessageBox.Yes
diff --git a/src/Mod/BIM/bimcommands/BimShape2DView.py b/src/Mod/BIM/bimcommands/BimShape2DView.py
index 3d69e95c34..9816e28c42 100644
--- a/src/Mod/BIM/bimcommands/BimShape2DView.py
+++ b/src/Mod/BIM/bimcommands/BimShape2DView.py
@@ -24,9 +24,9 @@
 
 """The BIM ShapeView command"""
 
-
 import FreeCAD
 import FreeCADGui
+
 from draftguitools import gui_shape2dview
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
diff --git a/src/Mod/BIM/bimcommands/BimSimpleCopy.py b/src/Mod/BIM/bimcommands/BimSimpleCopy.py
index 1bf6b5edfc..747b45f03d 100644
--- a/src/Mod/BIM/bimcommands/BimSimpleCopy.py
+++ b/src/Mod/BIM/bimcommands/BimSimpleCopy.py
@@ -24,7 +24,6 @@
 
 """The BIM SimpleCopy command"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -47,7 +46,6 @@ class BIM_SimpleCopy:
         return v
 
     def Activated(self):
-        import PartGui
         FreeCADGui.runCommand("Part_SimpleCopy")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimSite.py b/src/Mod/BIM/bimcommands/BimSite.py
index 0fb487e83a..77ea154c10 100644
--- a/src/Mod/BIM/bimcommands/BimSite.py
+++ b/src/Mod/BIM/bimcommands/BimSite.py
@@ -25,12 +25,12 @@
 # TODO: Refactor the Site code so it becomes a BuildingPart too
 
 
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimSketch.py b/src/Mod/BIM/bimcommands/BimSketch.py
index 355d1c4732..6ccd1e3f8d 100644
--- a/src/Mod/BIM/bimcommands/BimSketch.py
+++ b/src/Mod/BIM/bimcommands/BimSketch.py
@@ -24,7 +24,6 @@
 
 """The Bim Sketch command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimSpace.py b/src/Mod/BIM/bimcommands/BimSpace.py
index a05e39ff0f..7874dc7d4f 100644
--- a/src/Mod/BIM/bimcommands/BimSpace.py
+++ b/src/Mod/BIM/bimcommands/BimSpace.py
@@ -22,13 +22,12 @@
 
 """BIM Schedule command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimStairs.py b/src/Mod/BIM/bimcommands/BimStairs.py
index 1491de5645..a47e0fc10b 100644
--- a/src/Mod/BIM/bimcommands/BimStairs.py
+++ b/src/Mod/BIM/bimcommands/BimStairs.py
@@ -22,13 +22,12 @@
 
 """BIM Schedule command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimTDPage.py b/src/Mod/BIM/bimcommands/BimTDPage.py
index f1f5966dd0..ebfdc703a0 100644
--- a/src/Mod/BIM/bimcommands/BimTDPage.py
+++ b/src/Mod/BIM/bimcommands/BimTDPage.py
@@ -24,10 +24,10 @@
 
 """The BIM TDPage command"""
 
+import os
 
 import FreeCAD
 import FreeCADGui
-import os
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
@@ -49,7 +49,7 @@ class BIM_TDPage:
         return v
 
     def Activated(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
         import TechDraw
 
         templatedir = FreeCAD.ParamGet(
diff --git a/src/Mod/BIM/bimcommands/BimTDView.py b/src/Mod/BIM/bimcommands/BimTDView.py
index a80c0819d4..ae0416a2a4 100644
--- a/src/Mod/BIM/bimcommands/BimTDView.py
+++ b/src/Mod/BIM/bimcommands/BimTDView.py
@@ -24,7 +24,6 @@
 
 """The BIM TD View command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimText.py b/src/Mod/BIM/bimcommands/BimText.py
index f7b1fd3800..f57978df58 100644
--- a/src/Mod/BIM/bimcommands/BimText.py
+++ b/src/Mod/BIM/bimcommands/BimText.py
@@ -24,7 +24,6 @@
 
 """This module contains BIM wrappers for commands from other workbenches"""
 
-
 import FreeCAD
 import FreeCADGui
 
@@ -87,4 +86,3 @@ class BIM_Text:
 
 
 FreeCADGui.addCommand("BIM_Text", BIM_Text())
-
diff --git a/src/Mod/BIM/bimcommands/BimTogglePanels.py b/src/Mod/BIM/bimcommands/BimTogglePanels.py
index b77da954fe..4b6e4b37c7 100644
--- a/src/Mod/BIM/bimcommands/BimTogglePanels.py
+++ b/src/Mod/BIM/bimcommands/BimTogglePanels.py
@@ -28,6 +28,7 @@ import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimTrash.py b/src/Mod/BIM/bimcommands/BimTrash.py
index fc0db35cec..d4800cf87d 100644
--- a/src/Mod/BIM/bimcommands/BimTrash.py
+++ b/src/Mod/BIM/bimcommands/BimTrash.py
@@ -24,7 +24,6 @@
 
 """The BIM Trash command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimTruss.py b/src/Mod/BIM/bimcommands/BimTruss.py
index 6aab7bc40b..7652fa5fbe 100644
--- a/src/Mod/BIM/bimcommands/BimTruss.py
+++ b/src/Mod/BIM/bimcommands/BimTruss.py
@@ -22,13 +22,12 @@
 
 """BIM Truss command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimTutorial.py b/src/Mod/BIM/bimcommands/BimTutorial.py
index e7b53e3dbc..c43997b4e2 100644
--- a/src/Mod/BIM/bimcommands/BimTutorial.py
+++ b/src/Mod/BIM/bimcommands/BimTutorial.py
@@ -22,13 +22,14 @@
 
 """This is the tutorial of the BIM workbench"""
 
-
 import os
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -91,7 +92,9 @@ class BIM_Tutorial:
             QtCore.QTimer.singleShot(1000, self.load)
 
     def load(self, arg=None):
-        import re, sys, codecs
+        import codecs
+        import re
+        import sys
 
         if sys.version_info.major < 3:
             import urllib2
@@ -212,7 +215,7 @@ class BIM_Tutorial:
         self.update()
 
     def update(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         if not hasattr(self, "form") or not self.form or not hasattr(self, "dock"):
             return
@@ -271,7 +274,7 @@ class BIM_Tutorial:
             QtCore.QTimer.singleShot(TESTINTERVAL, self.checkGoals)
 
     def checkGoals(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtCore
 
         if not hasattr(self, "form"):
             return
diff --git a/src/Mod/BIM/bimcommands/BimUngroup.py b/src/Mod/BIM/bimcommands/BimUngroup.py
index 1b6ab04147..0784a219d8 100644
--- a/src/Mod/BIM/bimcommands/BimUngroup.py
+++ b/src/Mod/BIM/bimcommands/BimUngroup.py
@@ -24,7 +24,6 @@
 
 """The BIM Ungroup command"""
 
-
 import FreeCAD
 import FreeCADGui
 
diff --git a/src/Mod/BIM/bimcommands/BimViews.py b/src/Mod/BIM/bimcommands/BimViews.py
index 1c03676a87..0d16b21aee 100644
--- a/src/Mod/BIM/bimcommands/BimViews.py
+++ b/src/Mod/BIM/bimcommands/BimViews.py
@@ -23,11 +23,13 @@
 """The BIM Views command"""
 
 import sys
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 UPDATEINTERVAL = 2000  # number of milliseconds between BIM Views window update
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
diff --git a/src/Mod/BIM/bimcommands/BimWall.py b/src/Mod/BIM/bimcommands/BimWall.py
index 4c65847aa0..13a973d170 100644
--- a/src/Mod/BIM/bimcommands/BimWall.py
+++ b/src/Mod/BIM/bimcommands/BimWall.py
@@ -22,13 +22,12 @@
 
 """BIM wall command"""
 
-
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
diff --git a/src/Mod/BIM/bimcommands/BimWelcome.py b/src/Mod/BIM/bimcommands/BimWelcome.py
index f06e52e2c4..6a9f8456ad 100644
--- a/src/Mod/BIM/bimcommands/BimWelcome.py
+++ b/src/Mod/BIM/bimcommands/BimWelcome.py
@@ -22,11 +22,11 @@
 
 """This module contains FreeCAD commands for the BIM workbench"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 
 
@@ -41,8 +41,6 @@ class BIM_Welcome:
         }
 
     def Activated(self):
-        from PySide import QtCore, QtGui
-
         self.form = FreeCADGui.PySideUic.loadUi(":ui/dialogWelcome.ui")
 
         # handle the tutorial links
diff --git a/src/Mod/BIM/bimcommands/BimWindow.py b/src/Mod/BIM/bimcommands/BimWindow.py
index a65114acb4..076364eb3c 100644
--- a/src/Mod/BIM/bimcommands/BimWindow.py
+++ b/src/Mod/BIM/bimcommands/BimWindow.py
@@ -22,13 +22,14 @@
 
 """BIM window command"""
 
-
 import os
+
 import FreeCAD
 import FreeCADGui
 
 QT_TRANSLATE_NOOP = FreeCAD.Qt.QT_TRANSLATE_NOOP
 translate = FreeCAD.Qt.translate
+
 PARAMS = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/BIM")
 ALLOWEDHOSTS = ["Wall","Structure","Roof"]
 
diff --git a/src/Mod/BIM/bimcommands/BimWindows.py b/src/Mod/BIM/bimcommands/BimWindows.py
index 65839f26e4..a37de39e1a 100644
--- a/src/Mod/BIM/bimcommands/BimWindows.py
+++ b/src/Mod/BIM/bimcommands/BimWindows.py
@@ -22,7 +22,6 @@
 
 """The BIM Windows Manager command"""
 
-import os
 import FreeCAD
 import FreeCADGui
 
@@ -52,7 +51,7 @@ class BIM_Windows:
 class BIM_Windows_TaskPanel:
 
     def __init__(self):
-        from PySide import QtCore, QtGui
+        from PySide import QtGui
 
         self.form = FreeCADGui.PySideUic.loadUi(":/ui/dialogWindows.ui")
         self.form.setWindowIcon(QtGui.QIcon(":/icons/BIM_Windows.svg"))
@@ -78,7 +77,8 @@ class BIM_Windows_TaskPanel:
         FreeCAD.ActiveDocument.recompute()
 
     def update(self, index=None):
-        import Draft, Arch_rc
+        import Draft
+        import Arch_rc
         from PySide import QtGui
 
         self.form.windows.clear()
@@ -214,7 +214,8 @@ class BIM_Windows_TaskPanel:
         self.update()
 
     def setMaterial(self):
-        import Draft, Arch_rc
+        import Draft
+        import Arch_rc
         from PySide import QtGui
 
         form = FreeCADGui.PySideUic.loadUi(":/ui/dialogMaterialChooser.ui")
diff --git a/src/Mod/BIM/bimcommands/__init__.py b/src/Mod/BIM/bimcommands/__init__.py
index 88d2ce3c47..ef6aed1f43 100644
--- a/src/Mod/BIM/bimcommands/__init__.py
+++ b/src/Mod/BIM/bimcommands/__init__.py
@@ -1,7 +1,8 @@
+import glob
+import os
+
 import Arch_rc
 import PartGui
-import os
-import glob
 
 # populate the list of submodules
 modules = glob.glob(os.path.join(os.path.dirname(__file__), "*.py"))