Python數據類型詳解(二)列表
更新時間:2016年05月08日 09:32:49 作者:aylin
本文給大家詳細介紹的是Python數據類型中的列表(list),非常的簡單實用,有需要的小伙伴可以參考下
一.基本數據類型
整數:int
字符串:str(注:\t等于一個tab鍵)
布爾值: bool
列表:list (元素的集合)
列表用[]
元祖:tuple
元祖用()
字典:dict
注:所有的數據類型都存在想對應的類列里
二.列表所有數據類型:
基本操作:
索引,切片,追加,刪除,長度,切片,循環(huán),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(對象)- >——沒有一個對象附加到結束) pass def clear(self): # real signature unknown; restored from __doc__ """ L.clear() -> None -- remove all items from L """ (L.clear()- >沒有,把所有項目從L) pass def copy(self): # real signature unknown; restored from __doc__ """ L.copy() -> list -- a shallow copy of L """ (L.copy()- >列表- L的淺拷貝) return [] def count(self, value): # real signature unknown; restored from __doc__ """ L.count(value) -> integer -- return number of occurrences of value """ (L.count(價值)- >整數,返回值的出現次數) 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)- >沒有——從iterable擴展列表通過添加元) 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指數(價值,[開始,[不要]])- >整數,返回第一索引值。提出了ValueError如果不存在的價值。) """ 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(指數(對象)——前插入對象索引) 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((指數))- >項目——刪除并返回項指數(默認)。提出了IndexError如果列表為空或索引的范圍。) """ 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(價值)- >沒有,刪除第一次出現的值。提出了ValueError如果不存在的價值。) 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.所有列表數據類型舉例
#!/usr/bin/env python # -*- coding:utf-8 -*- #append追加 name_list = ["zhangyanlin","suoning","nick"] name_list.append('zhang') print(name_list) #count制定字符出現幾次 name_list = ["zhangyanlin","suoning","nick"] name_list.append('zhang') name_list.append('zhang') name_list.append('zhang') print(name_list.count('zhang')) #extend可擴展,批量往里加數據 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個元素,并賦值給另一個變量 name_list = ["zhangyanlin","suoning","nick"] name = name_list.pop() print(name) #remove移除,只移除從左邊找到的第一個 name_list = ["zhangyanlin","suoning","nick"] name_list.remove('nick') print(name_list) #reverse反轉 name_list = ["zhangyanlin","suoning","nick"] name_list.reverse() print(name_list) #del刪除其中元素,刪除1到3之間的 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.總長度len
name_list = ["zhangyanlin","suoning""aylin""nick"] print(name_list[1:len(name_list)])
七.for循環(huán)
name_list = ["zhangyanlin","suoning""aylin""nick"] for i in name_list: print(i)
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