python - list, cllections模块的deque对象

list.count()

list.pop()/list.pop(i)

list.insert(i,element)

list.sort()和sorted(list)

list.reverse()和reversed(list)

list.extend(list2)

list.index(element)

list.remove(element)

具体实现，直接看下面的代码：

Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> a = ['raymon1','raymon2','raymon3']
>>> len(a)
3
>>> a.count('raymon1')
1
>>> a
['raymon1', 'raymon2', 'raymon3']
>>> a.pop()
'raymon3'
>>> a
['raymon1', 'raymon2']
>>> a.insert(1,'raymon3')
>>> a
['raymon1', 'raymon3', 'raymon2']
>>> a[1],a[2] = a[2],a[1]
>>> a
['raymon1', 'raymon2', 'raymon3']
>>> a.pop(1)
'raymon2'
>>> a
['raymon1', 'raymon3']
>>> a = ['raymon3','raymon4','raymon1','raymon2']
>>> sorted(a)
['raymon1', 'raymon2', 'raymon3', 'raymon4']
>>> a
['raymon3', 'raymon4', 'raymon1', 'raymon2']
>>> a.sort()
>>> a
['raymon1', 'raymon2', 'raymon3', 'raymon4']
>>> for i in reversed(a):
...     print(i)
...
raymon4
raymon3
raymon2
raymon1
>>> a
['raymon1', 'raymon2', 'raymon3', 'raymon4']
>>> a.reverse()
>>> a
['raymon4', 'raymon3', 'raymon2', 'raymon1']
>>> b = ['raymon5','raymon6']
>>> a.extend(b)
>>> a
['raymon4', 'raymon3', 'raymon2', 'raymon1', 'raymon5', 'raymon6']
>>> a = ['raymon4', 'raymon3', 'raymon3', 'raymon1']
>>> a.remove('raymon3')
>>> a
['raymon4', 'raymon3', 'raymon1']
>>> a = ['raymon4', 'raymon3', 'raymon3', 'raymon1']
>>> a.index('raymon3')
1

模块collections里deque对象：

需要注意的：

deque.appendleft()
deque.popleft()
deque.rotate(i)
deque.extendleft()

>>> from collections import deque
>>> d = deque('raymon')
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n'])
>>> d.append('Y')
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n', 'Y'])
>>> d.appendleft('X')
>>> d
deque(['X', 'r', 'a', 'y', 'm', 'o', 'n', 'Y'])
>>> d.pop()
'Y'
>>> d
deque(['X', 'r', 'a', 'y', 'm', 'o', 'n'])
>>> d.popleft()
'X'
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n'])
>>> list(d)
['r', 'a', 'y', 'm', 'o', 'n']
>>> list(reversed(d))
['n', 'o', 'm', 'y', 'a', 'r']
>>> 'r' in d
True
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n'])
>>> d.extend('geng')
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n', 'g', 'e', 'n', 'g'])
>>> d.rotate(1)
>>> d
deque(['g', 'r', 'a', 'y', 'm', 'o', 'n', 'g', 'e', 'n'])
>>> d.rotate(-1)
>>> d
deque(['r', 'a', 'y', 'm', 'o', 'n', 'g', 'e', 'n', 'g'])
>>> d.clear()
>>> d
deque([])
>>> d.extendleft('abc')
>>> d
deque(['c', 'b', 'a'])
>>> d.extend('xyz')
>>> d
deque(['c', 'b', 'a', 'x', 'y', 'z'])