python笔记：1.3.4集合操作

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/bq_cui/article/details/89921750

# -*- coding: utf-8 -*-
"""
Created on Tue May  7 15:02:55 2019

@author: Administrator
"""

s1 = set([1, 2])
s2 = {3, 4, 3}
d1 = {'22':'wang', '23':'zhang'} # 注意都是花括号

print(s1, s2)
print(d1)

# 空集合
sk = set()
print(type(sk))

sk = {}
print(type(sk))

运行：

{1, 2} {3, 4}
{'22': 'wang', '23': 'zhang'}
<class 'set'>
<class 'dict'>