def __init__(self, resolvers):
        """
        @type resolvers: L{list}
        @param resolvers: A L{list} of L{IResolver} providers.
        """
        common.ResolverBase.__init__(self)
        self.resolvers = resolvers

        @type resolvers: L{list}
        @param resolvers: A L{list} of L{IResolver} providers.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/resolve.py