code: def accept_bras(cls, ops, kwargs):
      
      from qnet.algebra.core.state_algebra import Bra
      kets = []
      for bra in ops:
          if isinstance(bra, Bra):
              kets.append(bra.ket)
          else:
              return ops, kwargs
      return Bra.create(cls.create(*kets, **kwargs))
docs: Accept operands that are all bras, and turn that into to bra of the
      operation applied to all corresponding kets