Python列表详解（一）

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Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec  5 2015, 20:40:30) [MSC v.1500 64 bit (
AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

>>> world = []

>>> dir(world)
['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__delsli
ce__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getit
em__', '__getslice__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__',
'__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__r
educe__', '__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__'
, '__setitem__', '__setslice__', '__sizeof__', '__str__', '__subclasshook__', 'a
ppend', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort'
]

>>> help(world.append)
Help on built-in function append:

append(...)
L.append(object) -- append object to end

>>> world.append('God')
>>> world.append(1)
>>> world.append(2)
>>> world.append('all')

>>> world.append('ChangerLee','kai')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: append() takes exactly one argument (2 given)

>>> world.append(['ChangerLee','kai'])
>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai']]

>>> help(world.count)
Help on built-in function count:

count(...)
L.count(value) -> integer -- return number of occurrences of value

>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai']]
>>> world.count(1)
1
>>> world.count('God')
1
>>> world.count('Gody')
0

>>> help(world.extend)
Help on built-in function extend:

extend(...)
L.extend(iterable) -- extend list by appending elements from the iterable

>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai']]
>>> world.extend(['flowers','fish'])
>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers', 'fish']

>>> help(world.index)
Help on built-in function index:

index(...)
L.index(value, [start, [stop]]) -> integer -- return first index of value.
Raises ValueError if the value is not present.

>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers', 'fish']
>>> world.index('God')
0
>>> world.index(2)
2
>>> list1 = [1,2,3,4,5,6]
>>> list1 *=5
>>> list1
[1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 1, 2,
, 4, 5, 6]

>>> list1.index(1,6,10)
6
>>>

>>> world.index(num)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'num' is not defined

>>> help(world.insert)
Help on built-in function insert:

insert(...)
L.insert(index, object) -- insert object before index

>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers', 'fish']
>>> world.insert(1,'insertvar')
>>> world
['God', 'insertvar', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers', 'fish']

>>> help(world.pop)
Help on built-in function pop:

pop(...)
L.pop([index]) -> item -- remove and return item at index (default last).
Raises IndexError if list is empty or index is out of range.

>>> world
['God', 'insertvar', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers', 'fish']
>>> world.pop()
'fish'
>>> world
['God', 'insertvar', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers']
>>> world.pop(1)
'insertvar'
>>> world
['God',  1, 2, 'all', ['ChangerLee', 'kai'], 'flowers']

>>> help(world.remove)
Help on built-in function remove:

remove(...)
L.remove(value) -- remove first occurrence of value.
Raises ValueError if the value is not present.

>>> world
['God', 1, 2, 'all', ['ChangerLee', 'kai'], 'flowers']
>>> world.remove(1)
>>> world
['God', 2, 'all', ['ChangerLee', 'kai'], 'flowers']
>>> world.remove(3)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: list.remove(x): x not in list
>>> world
['God', 2, 'all', ['ChangerLee', 'kai'], 'flowers']

>>> world
['God', 2, 'all', ['ChangerLee', 'kai'], 'flowers']
>>> del world[1]
>>> world
['God', 'all', ['ChangerLee', 'kai'], 'flowers']
>>> del world
>>> world
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'world' is not defined

>>> help(world.sort)
Help on built-in function sort:

sort(...)
L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;
cmp(x, y) -> -1, 0, 1

>>> world = [1,2,3,33,22,11,'d','a','c',['qwer','asdf'],'ChangerLee','God']
>>> world.sort()
>>> world
[1, 2, 3, 11, 22, 33, ['qwer', 'asdf'], 'ChangerLee', 'God', 'a', 'c', 'd']
>>> world.sort(reverse=True)
>>> world
['d', 'c', 'a', 'God', 'ChangerLee', ['qwer', 'asdf'], 33, 22, 11, 3, 2, 1]
>>>

>>> help(world.reverse)
Help on built-in function reverse:

reverse(...)
L.reverse() -- reverse *IN PLACE*

>>> world
[1, 2, 3, 11, 22, 33, ['qwer', 'asdf'], 'ChangerLee', 'God', 'a', 'c', 'd']
>>> world.reverse()
>>> world
['d', 'c', 'a', 'God', 'ChangerLee', ['qwer', 'asdf'], 33, 22, 11, 3, 2, 1]
>>>