面试题

Posted 2021-01-02 youhongliang

1、列表list去重

l1 = [1,1,2,3,5,5,4,4,4,5,6]
set1 = set(l1)
# print(set1)           # set是集合
l2 = list(set1)         # 将集合转换成列表
print(l2)              #[1, 2, 3, 4, 5, 6]

2、字典的创建3种方式

# (1)直接创建
dic1 = {‘name‘:‘alex‘,‘age‘:28,‘sex‘:‘M‘}
# (2)fromkeys()创建
dic = dict.fromkeys([1,2,3],‘alex‘)
print(dic)
# （3）通过
dic = dict({‘name‘:‘alex‘,‘age‘:28,‘sex‘:‘M‘})
print(dic)