import yaml


with open('/data/namespaces.yaml') as f:
    namespaces = yaml.load(f, Loader=yaml.CLoader)

def to_set(input):
    if isinstance(input, str):
        return set([input])
    elif isinstance(input, list):
        return set(input)
    else:
        raise ValueError("input must be string or list")

def get_ns_by_tags(tags):
    s = set()
    for ns, t in namespaces.items():
        for name, value in tags.items():
            if name not in t:
                break
            if len(to_set(t[name]).intersection(to_set(value))) == 0:
                break
        else:
            s.add(ns)
    return list(s)