Python学习笔记——元组

元组是不可改变的序列

1 元组的定义

(元素, 元素, 元素)

不能删除元组中的某一个元素

>>> a = (1,2,3)      
>>> del a[0]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'tuple' object doesn't support item deletion
>>> a
(1, 2, 3)

可以直接将该元组删除

>>> a = (1,2,3)
>>> del a
>>> a
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined