Could you tell me how to do combined rotation of two objects?

Hai,

     I'm new to vpython. I've two objects, a cube and a pyramid. After 
changing the position of pyramid from its origin, could you tell me how 
to rotate both objects combined? I tried

         cube.rotate(angle=45, axis=(0,1,0))
         pyr.rotate(angle=45, axis=(0,1,0))

But it's rotating on two different axis of its on. I would like to have 
something like two objects sticked together and having rotation.

Could  you please help me to do so?

Thanks in advance.

Kind regards,
Ershad K

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