我有一个现有的json文件，想要为特定字段创建一个列表，如何创建它？我经历了特定于python的其他stackoverflow问题，但不是我想要的。
当前的JSON文件：
[{"team_name": "Journalist", "team_members": "Ali Smith, Jon Doe"},
{"team_name": "Journalist & Media", "team_members": "A Smith, Micheal P"},
{"team_name": "Photography", "team_members": "Micheal P, Adam A"}]
最终输出文件：
[{"team_name": "Journalist", "team_members": ["Ali Smith", "Jon Doe"]},
{"team_name": "Journalist & Media", "team_members": ["A Das", "Micheal P"]},
{"team_name": "Photography", "team_members": ["Micheal P", "Adam A"}]