################  get the constraint type

# import bge
import bge

# get current scene
scene = bge.logic.getCurrentScene()

# get object list
objList = scene.objects

# get object named Cube_Green
obj1 = objList["Cube_Green"]

# get object named Cube_Red
obj2 = objList["Cube_Red"]

# want to use a 6DOF constraint
constraintType = 12

# get obj1 physics ID
obj1_ID = obj1.getPhysicsId()

# get obj2 physics ID
obj2_ID = obj2.getPhysicsId()

# Use the object center of obj1 for pivot point
pivotPos_X =  0.0
pivotPos_Y =  0.0
pivotPos_Z = 0.0

# create a 6DOF constraint
cube_6DOF = bge.constraints.createConstraint( obj1_ID, obj2_ID, constraintType,pivotPos_X, pivotPos_Y, pivotPos_Z)

# get the constraint type
type = cube_6DOF.constraint_type