sliver_ids = [sliver['sliver_id'] for sliver in slivers]
constraint = SliverAllocation.sliver_id.in_(sliver_ids)
sliver_allocations = dbsession.query(SliverAllocation).filter(constraint)
sliver_allocation_dict = {}
for sliver_allocation in sliver_allocations:
sliver_ids = [sliver['sliver_id'] for sliver in slivers]
constraint = SliverAllocation.sliver_id.in_(sliver_ids)
sliver_allocations = dbsession.query(SliverAllocation).filter(constraint)
sliver_allocation_dict = {}
for sliver_allocation in sliver_allocations: