Left and right hemisphere separation

Hi,
I am using the MRIcron Brodmann atlas. However it does not specify left and right hemispheres. Do you have any ideas of how to separate left and right hemispheres? I was thinking of intersecting the atlas with a parcellation that indicates the left and right hemispheres (I use nilearn and python for image preprocessing). Do you know of any parcellation that indicates left and right hemispheres only?