ActiveObj.game.physics_type = 'RIGID_BODY'
ActiveObj.game.use_collision_bounds = 1

for obj in bpy.data.objects:
     bpy.ops.rigidbody.object_add(type='ACTIVE')

import bge

cont = bge.logic.getCurrentController()
own = cont.owner
own.suspendDynamics()
#OR
own.restoreDynamics()

import bge

cont = bge.logic.getCurrentController()
own = cont.owner
own.mass = float('inf')

import bge

own = bge.logic.getCurrentController().owner
if 'ori' not in own:
    own['ori'] = own.worldOrientation.copy()
own.worldOrientation = own['ori']
own.worldAngularVelocity = [0.0, 0.0, 0.0]