in hpcpack-autoscaler/src/cyclecloud-hpcpack/commonutil.py [0:0]
def ci_interset(a:Union[List[str], Set[str]], b:Union[List[str], Set[str]]) -> Set[str]:
r = set()
a = ci_set(a)
b = ci_set(b)
for c in a:
if ci_in(c, b):
r.add(c)
return r