编写函数处理user_list，新方法

写函数，完成以下功能: 
# 例如有:

user_list=[

    {"name": "alex","hobby":"抽烟"},

    {"name" :"alex","hobby":"喝酒"},

    {"name" :"alex","hobby":"烫头"},

    {"name":"wusir","hobby":"喊麦"},

    {"name":"wusir","hobby":"街舞"},

          ]

# 编写函数处理user_list 并返回如下结果:
# [{"name":"alex","hobby_list": ["抽烟"，"喝酒"，"烫头"]},
# {"name":"wuhir","hobby_list": ["喊麦"，"街舞"]},]

old_dict = dict()

aim_list = []

for a in user_list:

    k, v = a.values()

    old_dict.setdefault(k, []).append(v)

# old_dict = {'alex': ['抽烟', '喝酒', '烫头'], 'wusir': ['喊麦', '街舞']}

for k, v in old_dict.items():

    new_dict = dict()

    new_dict['name'] = k

    new_dict['hobby'] = v

    aim_list.append(new_dict)

print(aim_list)

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编写函数处理user_list，新方法

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