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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 setup_address(self, name, address=default, transact={}):
 """ Set up the name to point to the supplied address. The sender of the transaction must own the name, or its parent name. Example: If the caller owns ``parentname.eth`` with no subdomains and calls this method with ``sub.parentname.eth``, then ``sub`` will be created as part of this call. :param str name: ENS name to set up :param str address: name will point to this address, in checksum format. If ``None``, erase the record. If not specified, name will point to the owner's address. :param dict transact: the transaction configuration, like in :meth:`~web3.eth.Eth.sendTransaction` :raises InvalidName: if ``name`` has invalid syntax :raises UnauthorizedError: if ``'from'`` in `transact` does not own `name` """

        owner = self.setup_owner(name, transact=transact)
        self._assert_control(owner, name)
        if is_none_or_zero_address(address):
            address = None
        elif address is default:
            address = owner
        elif is_binary_address(address):
            address = to_checksum_address(address)
        elif not is_checksum_address(address):
            raise ValueError("You must supply the address in checksum format")
        if self.address(name) == address:
            return None
        if address is None:
            address = EMPTY_ADDR_HEX
        transact['from'] = owner
        resolver = self._set_resolver(name, transact=transact)
        return resolver.functions.setAddr(raw_name_to_hash(name), address).transact(transact)