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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def new_contract_proxy(self, contract_interface, contract_address: Address):
 """ Return a proxy for interacting with a smart contract. Args: contract_interface: The contract interface as defined by the json. address: The contract's address. """

        return ContractProxy(
            self,
            contract=self.new_contract(contract_interface, contract_address),
        )