1、Set基本数据类型 a、set集合,是一个无序且不重复的元素集合 classset(object): """ set() -> new empty set object set(iterable) -> new set object Build an unordered collection of unique elements. """ defadd(self, *args, **kwargs): # real signature unknown """ Add an element to ...
# True# def union(self, *args, **kwargs): # real signature unknown# """# Return the union of sets as a new set. 并集## (i.e. all elements that are in either set.)# """# pass# s1 = {11,22,33}# s2 = {22,33
s.add("11") 这是一个字符串print(s) 结果就是多了一个数字11和一个字符串"11"C:\python35\python3.exe D:/pyproject/day12列表/set-集合.py {'11', 11,'gouguoqi','sb'} 2. clear(self, *args, **kwargs) Remove all elements from this set element [ˈelɪmənt] 元素 从这个集合...
for element in my_list: #access elements one by one print(element) print(my_list) #access all elements print(my_list[3]) #access index 3 element print(my_list[0:2]) #access elements from 0 to 1 and exclude 2 print(my_list[::-1]) #access elements in reverse 其他功能 在处理列表...
set的内建方法help(set) >>> help(set) Help on class set in module __builtin__: class set(object) | set() -> new empty set object | set(iterable) -> new set object | | Build an unordered collection of unique elements. |
Build an unordered collection of unique elements. """ def add(self, *args, **kwargs): # real signature unknown """ Add an element to a set,添加元素 This has no effect if the element is already present. """ pass def clear(self, *args, **kwargs): # real signature unknown ...
以下是 Python 中list和set的类图: "can be converted to"List+elements list+add(element) : void+remove(element) : voidSet+elements set+add(element) : void+remove(element) : void 结论 将列表转换为集合是一种常见的操作,可以帮助我们去除重复元素并利用集合的特性(如唯一性和高效性)。在实际应用中,...
fruits[::-1] #start to end with step 2 - reverse order ['Kiwi', 'Banana', 'Guava', 'Apple'] #output 向列表中添加元素：可以使用append()、extend()和insert()函数向列表添加项。#Adding elementsfruits = ['Apple', 'Banana', "Orange"]#Appendnew elements fruits.append('Kiwi')print(fruits...
'bool' = True) -> 'FrameOrSeriesUnion'Concatenate pandas objects along a particular axis with optional set logicalong the other axes.Can also add a layer of hierarchical indexing on the concatenation axis,which may be useful if the labels are the same (or overlapping) onthe passed axis numb...
_,*elements_in_the_middle,_=[1,2,3,4,5,6,7,8]print(elements_in_the_middle)# [2, 3, 4, 5, 6, 7] ▍6、使用一行代码赋值多个变量 one,two,three,four=1,2,3,4 ▍7、列表推导式 只用一行代码,便可完成对数组的迭代以及运算。比如,将列表中的每个数字提高一倍。