python常见面试题

 1 """
 2 有一个列表[11, 2, 3, 3, 7, 9, 11, 2, 3],去重并且保持原来的顺序.
 3 """
 4 
 5 l1 = [11, 2, 3, 3, 7, 9, 11, 2, 3]
 6 ret = list(set(l1))
 7 print(ret)
 8 ret.sort(key=l1.index)  # 按值在l1中的索引进行排序
 9 print(ret)
10 
11 
12 l2 = [
13     {"name": "alex", "age": 36},
14     {"name": "GoldBoss", "age": 30},
15     {"name": "xiaoyima", "age": 18}
16 ]
17 # 课后作业
18 # 以年龄来排序:
19 l2.sort(key=lambda x: x["age"])
20 print(l2)