python如何为配置文件中的单个键分配2个值，并用逗号分隔

import configparser

config = configparser.ConfigParser()
config.read('config.ini')

[Section]
key = value1, value2

config.set('Section', 'key', 'value1, value2')

with open('config.ini', 'w') as configfile:
    config.write(configfile)

{
  "key": ["value1", "value2"]
}

import json

with open('config.json', 'r') as configfile:
    config = json.load(configfile)

config['key'] = ['value1', 'value2']

with open('config.json', 'w') as configfile:
    json.dump(config, configfile)