Is it possible to create physics simulation (with Bullet Physics Engine) without the `render` object

This example helped me: Memory Leak in Bullet Code - #5 by enn0x

rom panda3d.core import Vec3
from panda3d.core import Point3
from panda3d.core import Quat
from panda3d.core import TransformState

q = Quat.identQuat()
s = Vec3(1,1,1)

i = 0
while True:
   i += 1
   p = Point3(0,0,i*0.001)
   ts = TransformState.makePosQuatScale(p,q,s)