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"}, {"name": "alex", "hobby": "泡吧"}, {"name":"太白", "hobby":"开车"} ] # [{"name": "alex", "hobby_list": ["抽烟","喝酒","烫头","泡吧"]},{"name": "wusir", "hobby_list": ["喊麦", "街舞"]},] result = [] # {'name': 'alex', 'hobby_list': ['抽烟']} for user in user_list: # 1.判断是否在result里面存在了这个人, 如果存在. 把hobby_list添加一个hobby # 2.不存在. 创建一个新字典 for new_user in result: if user['name'] == new_user['name']: new_user['hobby_list'].append(user['hobby']) break else: dic = {} dic["name"] = user['name'] dic['hobby_list'] = [user['hobby']] result.append(dic) print(result)