Python 数据类型-集合

集合也是Python数据类型之一。接下来主要介绍集合类型的操作。

1.创建集合

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#创建集合
jh0101={11,22,"lucy",(1,"sdf")}
print(jh0101)
print(type(jh0101))

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代码运行结果：

{11, 'lucy', (1, 'sdf'), 22}
<class 'set'>

2.求交集

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#求交集
jh01={22,333,"asdf",("dsdf","12we",11)}
jh02={22,"asdf",("dsdf","12we",11)}
jiaoji=jh02.intersection(jh01)
print(jiaoji)

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代码运行结果：

{'asdf', ('dsdf', '12we', 11), 22}

3.列表转换为集合

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#列表转换为集合
jh01 = set(["qwe", 123])
print(jh01)
print(type(jh01))

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代码运行结果：

{123, 'qwe'}
<class 'set'>

4.求并集

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#求并集
jh01={11,22,333}
jh02={333,13,22}
bj=jh01.union(jh02)
print(bj)

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代码运行结果：

{13, 22, 11, 333}

 5.求差集

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#求差集
jh01={11,22,333}
jh02={333,13,22}
cj01=jh02.difference(jh01)
print(cj01)
cj02=jh01.difference(jh02)
print(cj02)

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代码运行结果：

{13}
{11}

6.求交叉补集

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#求交叉补集
jh01={11,22,333}
jh02={333,13,22}
jcbj01=jh01.symmetric_difference(jh02)
print(jcbj01)
jcbj02=jh02.symmetric_difference(jh01)
print(jcbj02)

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代码运行结果：

{11, 13}
{11, 13}