深入了解Python数据类型之列表

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

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：

基本操作：

•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, *args, **kwargs): # real signature unknown
 """ Return key in self. """
 pass

 def __delitem__(self, *args, **kwargs): # real signature unknown
 """ Delete self[key]. """
 pass

 def __eq__(self, *args, **kwargs): # real signature unknown
 """ Return self==value. """
 pass

 def __getattribute__(self, *args, **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, *args, **kwargs): # real signature unknown
 """ Return self>=value. """
 pass

 def __gt__(self, *args, **kwargs): # real signature unknown
 """ Return self>value. """
 pass

 def __iadd__(self, *args, **kwargs): # real signature unknown
 """ Implement self+=value. """
 pass

 def __imul__(self, *args, **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, *args, **kwargs): # real signature unknown
 """ Implement iter(self). """
 pass

 def __len__(self, *args, **kwargs): # real signature unknown
 """ Return len(self). """
 pass

 def __le__(self, *args, **kwargs): # real signature unknown
 """ Return self<=value. """
 pass

 def __lt__(self, *args, **kwargs): # real signature unknown
 """ Return self<value. """
 pass

 def __mul__(self, *args, **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, *args, **kwargs): # real signature unknown
 """ Return self!=value. """
 pass

 def __repr__(self, *args, **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, *args, **kwargs): # real signature unknown
 """ Return self*value. """
 pass

 def __setitem__(self, *args, **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","suoning","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","suoning","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","suoning","nick"]

print(name_list.index('nick'))

 

#insert插入，往索引里面插入值

name_list = ["zhangyanlin","suoning","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","suoning","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","suoning","nick"]

name_list.remove('nick')

print(name_list)

 

#reverse反转

name_list = ["zhangyanlin","suoning","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","suoning","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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