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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 load(obj, env=None, silent=None, key=None):
 """Reads and loads in to "settings" a single key or all keys from vault :param obj: the settings instance :param env: settings env default='DYNACONF' :param silent: if errors should raise :param key: if defined load a single key, else load all in env :return: None """


    client = get_client(obj)
    env_list = _get_env_list(obj, env)
    for env in env_list:
        path = "/".join([obj.VAULT_PATH_FOR_DYNACONF, env]).replace("//", "/")
        data = client.read(path)
        if data:
            # There seems to be a data dict within a data dict,
            # extract the inner data
            data = data.get("data", {}).get("data", {})
        try:
            if data and key:
                value = parse_conf_data(data.get(key), tomlfy=True)
                if value:
                    obj.logger.debug(
                        "vault_loader: loading by key: %s:%s (%s:%s)",
                        key,
                        "****",
                        IDENTIFIER,
                        path,
                    )
                    obj.set(key, value)
            elif data:
                obj.logger.debug(
                    "vault_loader: loading: %s (%s:%s)",
                    list(data.keys()),
                    IDENTIFIER,
                    path,
                )
                obj.update(data, loader_identifier=IDENTIFIER, tomlfy=True)
        except Exception as e:
            if silent:
                if hasattr(obj, "logger"):
                    obj.logger.error(str(e))
                return False
            raise