pyscfad.ml.pbc.scf.khf_pad#
k-point SCF with padding (for batched periodic calculations).
Follows the same strategy as pyscfad.ml.scf.hf_pad: the padded
(fake) AO block of every k-point Fock matrix is level-shifted far above the
real spectrum, and mo_mask() flags the fake MOs so occupations
(pyscfad.pbc.scf.khf_lite.get_occ()) skip them.
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