code: def fromWeb3(cls, web3, addr=None):
          
          return cls(web3.manager.provider, addr=addr)
docs: Generate an ENS instance with web3
  
          :param `web3.Web3` web3: to infer connection information
          :param hex-string addr: the address of the ENS registry on-chain. If not provided,
              ENS.py will default to the mainnet ENS registry address.