Python学习笔记_基础篇(三)_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 listlist(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)passdef 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)passdef 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 0def 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)passdef 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 0def 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)passdef 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。)"""passdef 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。)passdef reverse(self): # real signature unknown; restored from __doc__""" L.reverse() -- reverse *IN PLACE* """passdef sort(self, key=None, reverse=False): # real signature unknown; restored from __doc__""" L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE* """passdef __add__(self, *args, **kwargs): # real signature unknown""" Return self+value. """passdef __contains__(self, *args, **kwargs): # real signature unknown""" Return key in self. """passdef __delitem__(self, *args, **kwargs): # real signature unknown""" Delete self[key]. """passdef __eq__(self, *args, **kwargs): # real signature unknown""" Return self==value. """passdef __getattribute__(self, *args, **kwargs): # real signature unknown""" Return getattr(self, name). """passdef __getitem__(self, y): # real signature unknown; restored from __doc__""" x.__getitem__(y) <==> x[y] """passdef __ge__(self, *args, **kwargs): # real signature unknown""" Return self>=value. """passdef __gt__(self, *args, **kwargs): # real signature unknown""" Return self>value. """passdef __iadd__(self, *args, **kwargs): # real signature unknown""" Implement self+=value. """passdef __imul__(self, *args, **kwargs): # real signature unknown""" Implement self*=value. """passdef __init__(self, seq=()): # known special case of list.__init__"""list() -> new empty listlist(iterable) -> new list initialized from iterable's items# (copied from class doc)"""passdef __iter__(self, *args, **kwargs): # real signature unknown""" Implement iter(self). """passdef __len__(self, *args, **kwargs): # real signature unknown""" Return len(self). """passdef __le__(self, *args, **kwargs): # real signature unknown""" Return self<=value. """passdef __lt__(self, *args, **kwargs): # real signature unknown""" Return self<value. """passdef __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. """passdef __ne__(self, *args, **kwargs): # real signature unknown""" Return self!=value. """passdef __repr__(self, *args, **kwargs): # real signature unknown""" Return repr(self). """passdef __reversed__(self): # real signature unknown; restored from __doc__""" L.__reversed__() -- return a reverse iterator over the list """passdef __rmul__(self, *args, **kwargs): # real signature unknown""" Return self*value. """passdef __setitem__(self, *args, **kwargs): # real signature unknown""" Set self[key] to value. """passdef __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)