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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 GET_account_record(self, path_info, account_addr, token_type):
 """ Get the state of a particular token account Returns the account """

        if not check_account_address(account_addr):
            return self._reply_json({'error': 'Invalid address'}, status_code=400)

        if not check_token_type(token_type):
            return self._reply_json({'error': 'Invalid token type'}, status_code=400)

        blockstackd_url = get_blockstackd_url()
        res = blockstackd_client.get_account_record(account_addr, token_type, hostport=blockstackd_url)
        if json_is_error(res):
            log.error("Failed to get account state for {} {}: {}".format(account_addr, token_type, res['error']))
            return self._reply_json({'error': 'Failed to get account record for {} {}: {}'.format(token_type, account_addr, res['error'])}, status_code=res.get('http_status', 500))

        self._reply_json(res)
        return