cfg文件无法存储dict数据

import configparser
import unittest
from configparser import SectionProxy

def test_read_llm_config(provider: str):
    file = '../llm_config.cfg'
    config = configparser.ConfigParser()
    config.read(file)
    assert isinstance(config[provider], SectionProxy)
    assert isinstance(config[provider]['credentials'], str)


if __name__ == '__main__':
    test_read_llm_config('tongyi')
    test_read_llm_config('openai')

测试结果为True