seqmust be an object which has a__reversed__()method or supports the sequence protocol (the__len__()method and the__getitem__()method with integer arguments starting at0). 说明: 1. 函数功能是反转一个序列对象,将其元素从后向前颠倒构建成一个新的迭代器。 >>> a = reversed(range(10))...
Return a reverse iterator. seq must be an object which has a __reversed__() method or supports the sequence protocol (the __len__() method and the __getitem__() method with integer arguments starting at 0). reversed()函数的输入时任意一个序列,返回一份倒序后的序列副本。通常用于for循环...
The reversed() method returns an iterator object. Note: Iterator objects can be easily converted into sequences such as lists and tuples. They can also be directly iterated over using a loop. Example 1: Access Items in Reversed Order text = 'cad' # access items of the string in reversed...
Python内置函数(36)——reversed 英文文档: reversed(seq) Return a reverseiterator.seqmust be an object which has a__reversed__()method or supports the sequence protocol (the__len__()method and the__getitem__()method with integer arguments starting at0). 反转序列生成新的可迭代对象 说明: 1....
The reversed() method returns an iterator object. Note: Iterator objects can be easily converted into sequences such as lists and tuples. They can also be directly iterated over using a loop. Example 1: Access Items in Reversed Order text = 'cad' # access items of the string in reversed...
This demonstrates how to customize reverse iteration behavior for your objects. The__reversed__method should return an iterator. Range Objects Thereversedfunction works efficiently with range objects, creating a reverse iterator without generating all numbers in memory. ...
Return a reverse iterator. seq must be an object which has a__reversed__()method or supports ...
reversed()的返回值类型并不是list,因此如果需要,要再套上一个list()。 实验代码 代码语言:javascript 代码运行次数:0 运行 AI代码解释 importcopyL=['x',123,'abc','z','xyz']L_copy=copy.copy(L)assertlist(iforiinreversed(L))==['xyz','z','abc',123,'x']andL==L_copyL.reverse()assert...
Thereversed()function returns a reversed iterator object. Syntax Parameter Values ParameterDescription sequenceRequired. Any iterable object Related Pages Theiter()function returns an iterator object. Thelist.reverse()method reverses a List. ❮ Built-in Functions...
魔术方法 Python中,所有以双下划线“__”包围的方法(即定义在类中的函数)为魔术方法Magic Method。 --- 构造和初始化在使用classname()创造实例化对象时,会依次执行__new__和__init__两个方法。 __new__是用来创建类并返回这个类的实例(一般) __init__只是将传入的参数来初始化该实例,称为**构造方法**...