本文实例讲述了Python常见数据类型转换操作。分享给大家供大家参考,具体如下:

类型转换

主要针对几种存储工具:list、tuple、dict、set

特殊之处:dict是用来存储键值对的。

1、list 转换为set
l1 = [1, 2, 4, 5]
s1 = set(l1)
print(type(s1))
print(s1)
输出:
{1, 2, 4, 5}
2、set转换为list
s1 = set([1, 2, 3, 4])
l1 = list(s1)
print(type(l1))
print(l1)
输出:
[1, 2, 3, 4]
3、tuple 转换为set
t1 = (1, 2, 3, 4)
s1 = set(t1)
print(type(s1))
print(s1)
输出:
{1, 2, 3, 4}
4、set转换为tuple
s1 = set([1, 2, 3, 4])
t1 = tuple(s1)
print(type(t1))
print(t1)
输出:
(1, 2, 3, 4)
5、list转tuple
l1 = [1, 2, 4, 5]
t1 = tuple(l1)
print(type(t1))
print(t1)
输出:
(1, 2, 4, 5)
6、tuple转list
t1 = (1, 2, 3, 4)
l1 = list(t1)
print(type(l1))
print(l1)
输出:
[1, 2, 3, 4]
7、list转dict
list1=[('a',1),('b',2),('c',3)]
dict1={k:v for k,v in list1}
dict2={v:k for k,v in list1}
print(dict1)
print(dict2)
输出:
{'a': 1, 'b': 2, 'c': 3}
{1: 'a', 2: 'b', 3: 'c'}

希望本文所述对大家Python程序设计有所帮助。

本文标题: Python常见数据类型转换操作示例