1 使用场景?
# 列表list
数据类型相同, rwx文件
100个人的名字
#字典 dict
很多信息描述一个人
#tuple #只读文件
不能修改的重要数据 元组
只能查看(大体跟list差不多)
1,显示的告知别人,此处数据不可更改
2,数据库连接信息
2 元祖特性
![](https://img2018.cnblogs.com/blog/1438762/201812/1438762-20181219090446059-1460096270.png)
tuple1 = (11,22,33)
print(type(tuple1))
#<class 'tuple'>
tuple1[0] = 99
Traceback (most recent call last):
File "C:/Users/Administrator.USER-20181218HU/PycharmProjects/DPJ-1/Demo/其他/other.py", line 455, in <module>
tuple1[0] = 99
TypeError: 'tuple' object does not support item assignment
![](https://img2018.cnblogs.com/blog/1438762/201812/1438762-20181219090616402-677461077.png)
3 元组的功能
![](https://img2018.cnblogs.com/blog/1438762/201812/1438762-20181219090642708-1808602919.png)
4 元组的拆包
![](https://img2018.cnblogs.com/blog/1438762/201812/1438762-20181219092605058-987493857.png)
a = (11,22)
b = a
print(b)
c,d = a = (11,22)
print(c)
print(d)
#运行结果
(11, 22)
11
22