diff --git a/src/Mod/Test/UnitTests.py b/src/Mod/Test/UnitTests.py
index 5815020e8680..76c353fae996 100644
--- a/src/Mod/Test/UnitTests.py
+++ b/src/Mod/Test/UnitTests.py
@@ -1,41 +1,42 @@
-#   (c) Juergen Riegel (juergen.riegel@web.de) 20010 LGPL   
+#   (c) Juergen Riegel (juergen.riegel@web.de) 20010 LGPL
+
+import FreeCAD
+import unittest
+import math
 
-import FreeCAD, os, unittest, math
 
 def tu(str):
-	return FreeCAD.Units.Quantity(str).Value
-	
-	
+    return FreeCAD.Units.Quantity(str).Value
+
 #---------------------------------------------------------------------------
 # define the functions to test the FreeCAD UnitApi code
 #---------------------------------------------------------------------------
 
-def compare(x,y): return math.fabs(x-y)<0.00001
+
+def compare(x, y):
+    return math.fabs(x - y) < 0.00001
+
 
 class UnitBasicCases(unittest.TestCase):
 
     def testConversions(self):
         #tu = FreeCAD.Units.translateUnit
-        self.failUnless(compare(  tu('10 m')                 , 10000.0          ) )
-        self.failUnless(compare(  tu('3/8 in')               , 9.525            ) )
-        self.failUnless(compare(  tu('100 km/h')             , 27777.77777777   ) )
-        self.failUnless(compare(  tu('m^2*kg*s^-3*A^-2')     , 1000000.0        ) )
-        self.failUnless(compare(  tu('(m^2*kg)/(A^2*s^3)')   , 1000000.0        ) )
-        self.failUnless(compare(  tu('2*pi rad')             , 360.0            ) )
-        self.failUnless(compare(  tu('2*pi rad') / tu('gon') , 400.0            ) )
+        self.failUnless(compare(tu('10 m'), 10000.0))
+        self.failUnless(compare(tu('3/8 in'), 9.525))
+        self.failUnless(compare(tu('100 km/h'), 27777.77777777))
+        self.failUnless(compare(tu('m^2*kg*s^-3*A^-2'), 1000000.0))
+        self.failUnless(compare(tu('(m^2*kg)/(A^2*s^3)'), 1000000.0))
+        self.failUnless(compare(tu('2*pi rad'), 360.0))
+        self.failUnless(compare(tu('2*pi rad') / tu('gon'), 400.0))
 
     def testImperial(self):
         #tu = FreeCAD.Units.translateUnit
-        self.failUnless(compare(  tu('3/8 in')         , 9.525            ) )
-        #self.failUnless(compare(  tu('1fo (3+7/16)in') , 392.112500       ) ) this gives a parser syntax error!!!
-        self.failUnless(compare(  tu('1\' (3+7/16)"')  , 392.112500       ) )
+        self.failUnless(compare(tu('3/8in'), 9.525))
+        #self.failUnless(compare(tu('1fo(3+7/16)in'),392.112500))thisgivesaparsersyntaxerror!!!
+        self.failUnless(compare(tu('1\'(3+7/16)"'), 392.112500))
 
     def testTrigonometric(self):
-        #tu = FreeCAD.Units.translateUnit
-        self.failUnless(compare(  tu('sin(pi)')        ,  math.sin(math.pi) ) )
-        self.failUnless(compare(  tu('cos(pi)')        ,  math.cos(math.pi) ) )
-        self.failUnless(compare(  tu('tan(pi)')        ,  math.tan(math.pi) ) )
-
-
-
-
+        #tu=FreeCAD.Units.translateUnit
+        self.failUnless(compare(tu('sin(pi)'), math.sin(math.pi)))
+        self.failUnless(compare(tu('cos(pi)'), math.cos(math.pi)))
+        self.failUnless(compare(tu('tan(pi)'), math.tan(math.pi)))