我想在JSON文件中的列表中添加一个字典。

reading = []
reading["game_review"] = {
    "name" : your_name,
    "time" : round(time_result, 2),
    "level" : level+1
}

with open("stat.json", "a") as stats:
    json.dump(reading, stats)

每次运行代码时，JSON文件中都会创建另一个字典，并将其自身放在我已有的字典旁边，我希望它将其自身添加到字典内的列表中。
编辑：

with open("stat.json", "r") as stat_read:
    reading = json.loads(stat_read.read())

reading["game_review"] = {
    "name" : your_name,
    "time" : round(time_result, 2),
    "level" : level+1
}

with open("stat.json", "a") as stats:
    json.dump(reading, stats)