字典列表转换例题

将列表list1 = [{"name": "美女", "hobby": "逛街"},

{"name": "帅哥", "hobby": "喊麦"},

{"name": "美女", "hobby": "唱歌"},

{"name": "帅哥", "hobby": "打游戏"}]

转换成[{'name': '美女', 'hobby_list': ['逛街', '唱歌']}, {'name': '帅哥', 'hobby_list': ['喊麦', '打游戏']}]形式

 1 lst1 = [{"name": "美女", "hobby": "逛街"},
 2     {"name": "帅哥", "hobby": "喊麦"},
 3     {"name": "美女", "hobby": "唱歌"},
 4     {"name": "帅哥", "hobby": "打游戏"}]
 5 dic = {}
 6 for i in lst1:
 7     if i["name"] not in dic:
 8         dic[i["name"]] = [i["hobby"]]           #如果键不存在则创建一个
 9     else:
10         dic[i["name"]] += [i["hobby"]]          #如果键已经存在了,就将新值添加上
11 lst =[]
12 for k,v in dic.items():
13     dic1 = {}
14     dic1["name"] = k
15     dic1["hobby_list"] = v
16     lst.append(dic1)
17 print(lst)

结果对照:

1 [{'name': '美女', 'hobby_list': ['逛街', '唱歌']}, {'name': '帅哥', 'hobby_list': ['喊麦', '打游戏']}]