在hydra python结构化配置中，如何插入值？

from hydra import Config, initialize

initialize(config_path="config")
cfg = Config()

cfg.some_field = "some_value"

cfg.nested_field.sub_field = "sub_value"

cfg.list_field[0] = "value_1"
cfg.dict_field["key"] = "value"

from omegaconf import OmegaConf

cfg = OmegaConf.create()
OmegaConf.update(cfg, "some_field", "some_value")