Python数据类型详解（二）列表

概述一.基本数据类型　　整数：int　　字符串：str(注：\\t等于一个tab键)　　布尔值：bool

一.基本数据类型

　　整数：int
　　字符串：str(注：\t等于一个tab键)
　　布尔值： bool
　　列表：List （元素的集合）
　　列表用[]
　　元祖：tuple
　　元祖用（）
　　字典：dict

注：所有的数据类型都存在想对应的类列里

二.列表所有数据类型：

基本 *** 作：

索引，切片，追加，删除，长度，切片，循环，包含

List

class List(object):  """  List() -> new empty List  List(iterable) -> new List initialized from iterable's items  """  def append(self,p_object): # real signature unkNown; restored from __doc__    """ L.append(object) -> None -- append object to end """    (L.append(对象)- >――没有一个对象附加到结束)    pass  def clear(self): # real signature unkNown; restored from __doc__    """ L.clear() -> None -- remove all items from L """    (L.clear()- >没有,把所有项目从L)    pass  def copy(self): # real signature unkNown; restored from __doc__    """ L.copy() -> List -- a shallow copy of L """    (L.copy()- >列表- L的浅拷贝)    return []  def count(self,value): # real signature unkNown; restored from __doc__    """ L.count(value) -> integer -- return number of occurrences of value """    (L.count(价值)- >整数,返回值的出现次数)    return 0  def extend(self,iterable): # real signature unkNown; restored from __doc__    """ L.extend(iterable) -> None -- extend List by appending elements from the iterable """    (L.extend(iterable)- >没有――从iterable扩展列表通过添加元)    pass  def index(self,value,start=None,stop=None): # 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.    (l指数(价值,[开始,[不要]])- >整数,返回第一索引值。提出了ValueError如果不存在的价值。)    """    return 0  def insert(self,index,p_object): # real signature unkNown; restored from __doc__    """ L.insert(index,object) -- insert object before index """    (l插入(指数(对象)――前插入对象索引)    pass  def pop(self,index=None): # 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.    (L.pop((指数))- >项目――删除并返回项指数(默认)。提出了IndexError如果列表为空或索引的范围。)    """    pass  def remove(self,value): # real signature unkNown; restored from __doc__    """    L.remove(value) -> None -- remove first occurrence of value.    Raises ValueError if the value is not present.    """    (L.remove(价值)- >没有,删除第一次出现的值。提出了ValueError如果不存在的价值。)    pass  def reverse(self): # real signature unkNown; restored from __doc__    """ L.reverse() -- reverse *IN PLACE* """    pass  def sort(self,key=None,reverse=False): # real signature unkNown; restored from __doc__    """ L.sort(key=None,reverse=False) -> None -- stable sort *IN PLACE* """    pass  def __add__(self,*args,**kwargs): # real signature unkNown    """ Return self+value. """    pass  def __contains__(self,**kwargs): # real signature unkNown    """ Return key in self. """    pass  def __delitem__(self,**kwargs): # real signature unkNown    """ Delete self[key]. """    pass  def __eq__(self,**kwargs): # real signature unkNown    """ Return self==value. """    pass  def __getattribute__(self,**kwargs): # real signature unkNown    """ Return getattr(self,name). """    pass  def __getitem__(self,y): # real signature unkNown; restored from __doc__    """ x.__getitem__(y) <==> x[y] """    pass  def __ge__(self,**kwargs): # real signature unkNown    """ Return self>=value. """    pass  def __gt__(self,**kwargs): # real signature unkNown    """ Return self>value. """    pass  def __iadd__(self,**kwargs): # real signature unkNown    """ Implement self+=value. """    pass  def __imul__(self,**kwargs): # real signature unkNown    """ Implement self*=value. """    pass  def __init__(self,seq=()): # kNown special case of List.__init__    """    List() -> new empty List    List(iterable) -> new List initialized from iterable's items    # (copIEd from class doc)    """    pass  def __iter__(self,**kwargs): # real signature unkNown    """ Implement iter(self). """    pass  def __len__(self,**kwargs): # real signature unkNown    """ Return len(self). """    pass  def __le__(self,**kwargs): # real signature unkNown    """ Return self<=value. """    pass  def __lt__(self,**kwargs): # real signature unkNown    """ Return self<value. """    pass  def __mul__(self,**kwargs): # real signature unkNown    """ Return self*value.n """    pass  @staticmethod # kNown case of __new__  def __new__(*args,**kwargs): # real signature unkNown    """ Create and return a new object. See help(type) for accurate signature. """    pass  def __ne__(self,**kwargs): # real signature unkNown    """ Return self!=value. """    pass  def __repr__(self,**kwargs): # real signature unkNown    """ Return repr(self). """    pass  def __reversed__(self): # real signature unkNown; restored from __doc__    """ L.__reversed__() -- return a reverse iterator over the List """    pass  def __rmul__(self,**kwargs): # real signature unkNown    """ Return self*value. """    pass  def __setitem__(self,**kwargs): # real signature unkNown    """ Set self[key] to value. """    pass  def __sizeof__(self): # real signature unkNown; restored from __doc__    """ L.__sizeof__() -- size of L in memory,in bytes """    pass  __hash__ = None

三.所有列表数据类型举例

#!/usr/bin/env python# -*- Coding:utf-8 -*- #append追加name_List = ["zhangyanlin","suoning","nick"]name_List.append('zhang')print(name_List) #count制定字符出现几次name_List = ["zhangyanlin","nick"]name_List.append('zhang')name_List.append('zhang')name_List.append('zhang')print(name_List.count('zhang')) #extend可扩展，批量往里加数据name_List = ["zhangyanlin","nick"]name = ["aylin","zhang","yan","lin"]name_List.extend(name)print(name_List) #index找到字符所在的位置name_List = ["zhangyanlin","nick"]print(name_List.index('nick')) #insert插入，往索引里面插入值name_List = ["zhangyanlin","nick"]name_List.insert(1,"zhang")print(name_List) #pop在原列表中移除掉最后一个元素，并赋值给另一个变量name_List = ["zhangyanlin","nick"]name = name_List.pop()print(name) #remove移除,只移除从左边找到的第一个name_List = ["zhangyanlin","nick"]name_List.remove('nick')print(name_List) #reverse反转name_List = ["zhangyanlin","nick"]name_List.reverse()print(name_List) #del删除其中元素,删除1到3之间的name_List = ["zhangyanlin","nick"]del name_List[1:3]print(name_List)

四.索引

name_List = ["zhangyanlin","suoning""aylin""nick"]print(name_List[0])

五.切片

name_List = ["zhangyanlin","suoning""aylin""nick"]print(name_List[0:2])

六.总长度len

name_List = ["zhangyanlin","suoning""aylin""nick"]print(name_List[1:len(name_List)])

七.for循环

name_List = ["zhangyanlin","suoning""aylin""nick"]for i in name_List:  print(i)

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