import Part, FreeCAD, math, PartGui, FreeCADGui
from FreeCAD import Base

# get the selected objects, with first selection for the trajectory and second for the section
s = FreeCADGui.Selection.getSelection()
try:
     shape1=s[0].Shape
     shape2=s[1].Shape
except:
     print "Wrong selection"

traj = Part.Wire([shape1])
section = Part.Wire([shape2])

# create Part object in the current document
myObject=App.ActiveDocument.addObject("Part::Feature","Sweep")

# variable makeSolid = 1 to create solid, 0 to create surfaces
makeSolid = True #1
isFrenet = True #1

# create a 3D shape and assigh it to the current document
Sweep = Part.Wire(traj).makePipeShell([section],makeSolid,isFrenet)
myObject.Shape = Sweep