如何从python dataframe中一个对象列内的多个字典键值中提取最大值和相应的键值

我试图从多个字典键中提取最大值和相应的键&python dataframe中对象列中的值,有人能帮我吗

df:

                                          Obj_values
0                    {"Sony":25,"Max":91,"James":55}
1                               {"Jack":12,"Max":10}
2                                                 {}
3
4                              {"Halk":21,"Hall":15}
5                                            {"H":1}
6                       {"Aws":"k","Az":113,"Gc":"b"}
7  {"Max":60,"HBO":113,"Sony":55, "WS":1256,"James":55}

我尝试了下面的方法,但仍然无法将数据帧转换为dict:

obj_lst = df["Obj_values"].tolist()
df["Obj_values"] = ast.literal_eval(str(obj_lst))

df["Obj_values"].dtype
# dtype('O')

for k,v in df["Obj_values"].items():
    print(k,v)

预期结果: