FEM: pep8, more code formatting

src/Mod/Fem/femsolver/calculix/write_constraint_initialtemperature.py

@@ -25,7 +25,7 @@ __title__ = "FreeCAD FEM calculix constraint initialtemperature"
 __author__ = "Bernd Hahnebach"
 __url__ = "https://www.freecadweb.org"
 
-import FreeCAD
+from FreeCAD import Units
 
 
 def get_analysis_types():
@@ -48,12 +48,10 @@ def write_constraint(f, femobj, inittemp_obj, ccxwriter):
 
     # floats read from ccx should use {:.13G}, see comment in writer module
 
-    f.write(
-            "{},{}\n".format(
-                ccxwriter.ccx_nall,
-                FreeCAD.Units.Quantity(inittemp_obj.initialTemperature.getValueAs("K"))
-            )
-        )
+    f.write("{},{}\n".format(
+        ccxwriter.ccx_nall,
+        Units.Quantity(inittemp_obj.initialTemperature.getValueAs("K"))
+    ))
 
 
 # Should only be one object in the analysis

src/Mod/Fem/femsolver/calculix/write_femelement_matgeosets.py

@@ -26,8 +26,6 @@ __author__ = "Bernd Hahnebach"
 __url__ = "https://www.freecadweb.org"
 
 
-
-
 def write_femelement_matgeosets(f, ccxwriter):
 
     # write mat_geo_sets to file