Python：list用法

>>> a_list=[]
>>> a_list
[]

>>> a_list=[1,2,3,4,5]
>>> a_list
[1, 2, 3, 4, 5]

>>> for i in a_list:
...     print i
... 
1
2
3
4
5

>>> a_list.append(‘adele‘)
>>> a_list
[1, 2, 3, 4, 5, ‘adele‘]

>>> a_list.insert(1,‘taylor‘)
>>> a_list
[1, ‘taylor‘, 2, 3, 4, 5, ‘adele‘]

>>> a_list.extend([‘1989‘,‘hello‘])
>>> a_list
[1, ‘taylor‘, 2, 3, 4, 5, ‘adele‘, ‘1989‘, ‘hello‘]

>>> a_list.pop()    #默认删除最后一个值
‘hello‘  

>>> a_list.pop(1)    #指定删除位置
‘taylor‘

>>> a_list
[1, 1, 2, 3, 4, 5, ‘1989‘, ‘adele‘]
>>> a_list.remove(1)
>>> a_list
[1, 2, 3, 4, 5, ‘1989‘, ‘adele‘]

>>> del a_list[0]    #删除指定元素
>>> a_list
[2, 3, 4, 5, ‘1989‘, ‘adele‘]

>>> del a_list[0:2]    #删除连续几个元素
>>> a_list
[4, 5, ‘1989‘, ‘adele‘]

>>> del a_list        #删除整个list
>>> a_list
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name ‘a_list‘ is not defined

>>> a_list.sort()
>>> a_list
[1, 1, 2, 3, 4, 5, ‘1989‘, ‘adele‘]

>>> a_list
[1, 2, 3, 4, 5, ‘1989‘, ‘adele‘]
>>> a_list.reverse()
>>> a_list
[‘adele‘, ‘1989‘, 5, 4, 3, 2, 1]

>>> [1,2,3]+[‘a‘,‘b‘,‘c‘]
[1, 2, 3, ‘a‘, ‘b‘, ‘c‘]

>>> [‘hello‘]*4
[‘hello‘, ‘hello‘, ‘hello‘, ‘hello‘]

>>> 1 in [1,2,3]
True