Python成长之路第二篇（2）_列表元组内置函数用法

列表元组内置函数用法list

元组的用法和列表相似就不一一介绍了

1）def append(self, p_object):将值添加到列表的最后

# real signature unknown; restored from __doc__

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

pass

（2）def count(self, value): 值的出现次数

# real signature unknown; restored from __doc__

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

return 0

（3）def extend(self, iterable): 扩展列表通过添加元素

# real signature unknown; restored from __doc__

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

pass

（4）def index(self, value, start=None, stop=None): 返回第一次出现定义某只的下标

# real signature unknown; restored from __doc__

"""

L.index(value, [start, [stop]]) -> integer -- return first index of value.

Raises ValueError if the value is not present.

"""

return 0

（5）def insert(self, index, p_object):指定下标插入元素

# real signature unknown; restored from __doc__

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

pass

（6）def pop(self, index=None):删除并返回指定下标的值，如果没有指定下标最后一个返回

# real signature unknown; restored from __doc__

"""

L.pop([index]) -> item -- remove and return item at index (default last).

Raises IndexError if list is empty or index is out of range.

"""

pass

（7）def remove(self, value): 移除列表中的指定值第一个

# real signature unknown; restored from __doc__

"""

L.remove(value) -- remove first occurrence of value.

Raises ValueError if the value is not present.

"""

pass

（8）def reverse(self): 翻转

# real signature unknown; restored from __doc__

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

pass

（9）def sort(self, cmp=None, key=None, reverse=False):比较大小

数字按照大小比较

中文按照unicode比较

# real signature unknown; restored from __doc__

"""

L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;

cmp(x, y) -> -1, 0, 1

"""

pass

（10）def __add__(self, y): 加

# real signature unknown; restored from __doc__

""" x.__add__(y) <==> x+y """

pass

（11）def __contains__(self, y):包含

# real signature unknown; restored from __doc__

""" x.__contains__(y) <==> y in x """

pass

（12）def __delitem__(self, y): 删除单个序列元素

# real signature unknown; restored from __doc__

""" x.__delitem__(y) <==> del x[y] """

pass

（13）def __delslice__(self, i, j): 删除序列片断

# real signature unknown; restored from __doc__

"""

x.__delslice__(i, j) <==> del x[i:j]

Use of negative indices is not supported.

"""

pass

（14）def __eq__(self, y): 等于

# real signature unknown; restored from __doc__

""" x.__eq__(y) <==> x==y """

pass

（15）def __getattribute__(self, name): 取属性；内建 getattr()；总是被调用

# real signature unknown; restored from __doc__

""" x.__getattribute__('name') <==> x.name """

pass

（16）def __getitem__(self, y): 得到单个序列元素

# real signature unknown; restored from __doc__

""" x.__getitem__(y) <==> x[y] """

pass

（17）def __getslice__(self, i, j): 得到序列片断

# real signature unknown; restored from __doc__

"""

x.__getslice__(i, j) <==> x[i:j]

Use of negative indices is not supported.

"""

pass

（18）def __ge__(self, y):大于等于

# real signature unknown; restored from __doc__

""" x.__ge__(y) <==> x>=y """

pass

（19）def __gt__(self, y):大于

# real signature unknown; restored from __doc__

""" x.__gt__(y) <==> x>y """

pass

（20）def __iadd__(self, y):

# real signature unknown; restored from __doc__

""" x.__iadd__(y) <==> x+=y """

pass

（21）def __imul__(self, y):

# real signature unknown; restored from __doc__

""" x.__imul__(y) <==> x*=y """

pass

（22）def __init__(self, seq=()): _init__方法在类的一个对象被建立时，马上运行

# known special case of list.__init__

"""

list() -> new empty list

list(iterable) -> new list initialized from iterable's items

# (copied from class doc)

"""

pass

（23）def __iter__(self): 创建迭代类；内建 iter()

# real signature unknown; restored from __doc__

""" x.__iter__() <==> iter(x) """

pass

（24）def __len__(self): 序列中项的数目长度

# real signature unknown; restored from __doc__

""" x.__len__() <==> len(x) """

pass

（25）def __le__(self, y):小于等于

# real signature unknown; restored from __doc__

""" x.__le__(y) <==> x<=y """

pass

（26）def __lt__(self, y):小于

# real signature unknown; restored from __doc__

""" x.__lt__(y) <==> x<y """

pass

（27）def __mul__(self, n): 重复；*操作符相乘

# real signature unknown; restored from __doc__

""" x.__mul__(n) <==> x*n """

pass

@staticmethod # known case of __new__

（28）def __new__(S, *more) 构造器（带一些可选的参数） ；通常用在设置不变数据类型的子类。

: # real signature unknown; restored from __doc__

""" T.__new__(S, ...) -> a new object with type S, a subtype of T """

pass

（29）def __ne__(self, y):不等于

# real signature unknown; restored from __doc__

""" x.__ne__(y) <==> x!=y """

pass

（30）def __repr__(self): 对机器友好

real signature unknown; restored from __doc__

""" x.__repr__() <==> repr(x) """

pass

（31）def __reversed__(self): 接受一个序列作为参数,返回一个以逆序访问的迭代器(PEP 322)

# real signature unknown; restored from __doc__

""" L.__reversed__() -- return a reverse iterator over the list """

pass

（32）def __rmul__(self, n): 反向相乘

# real signature unknown; restored from __doc__

""" x.__rmul__(n) <==> n*x """

pass

（33）def __setitem__(self, i, y): 设置单个序列元素

# real signature unknown; restored from __doc__

""" x.__setitem__(i, y) <==> x[i]=y """

pass

（34）def __setslice__(self, i, j, y): 设置序列片断

# real signature unknown; restored from __doc__

"""

x.__setslice__(i, j, y) <==> x[i:j]=y

Use of negative indices is not supported.

"""

pass

（35）def __sizeof__(self): 查看占用内存的函数

# real signature unknown; restored from __doc__

""" L.__sizeof__() -- size of L in memory, in bytes """

pass

__hash__ = None

list