1、迭代（Iteration）2、循环（Loop）3、递归（Recursion）4、遍历（Traversal）5、总结 1、迭代（Iterat...
如果用iter()...next()迭代,当最后一个完成之后,它不会自动结束,还要向下继续,但是后面没有元素了,于是就报一个称之为StopIteration的错误(这个错误的名字叫做:停止迭代,这哪里是报错,分明是警告)。 看官还要关注iter()...next()迭代的一个特点。当迭代对象lst_iter被迭代结束,即每个元素都读取一边之后,指针就...
# An iterable user defined typeclassTest:# Constructordef__init__(self,limit):self.limit=limit# Creates iterator object# Called when iteration is initializeddef__iter__(self):self.x=10returnself# To move to next element. In Python 3,# we should replace next with __next__def__next__(...
以下是一个简单的序列图,展示了跳出当前循环和外部循环的过程: PythonUserPythonUseralt[Condition True][Condition False]alt[Condition True][Condition False]Start loopCheck conditionExit current loopContinue to next iterationIf nested loopExit outer loopContinue nested loop 希望这些内容能够帮助你更深入理解如何...
However, the loop continues to the next iteration. This is why C++ is displayed in the output. Visit Python break and continue article to learn more. Nested for loops A loop can also contain another loop inside it. These loops are called nested loops. In a nested loop, the inner loop ...
1. 迭代(iteration)与迭代器(iterator) 1.1 构建简单迭代器 1.2 调用next() 1.3 迭代器状态图 2. 生成器(generator) 2.1 创建简单生成器 2.2 利用函数定义生成器 3. 协程 3.1 概念理解 3.2 实例 4. 异步IO 4.1 概念理解 4.2 实例 1 迭代(iteration)与迭代器(iterator) ...
In each iteration of the loop, the variable i get the current value. Example: Print first 10 numbers using a for loop Here we used the range() function to generate integers from 0 to 9 Next, we used the for loop to iterate over the numbers produced by the range() function In the...
迭代器对象是一个含有next (Python 2)或者__next__ (Python 3)方法的对象。如果需要自定义迭代器,则需要满足如下迭代器协议: 定义了__iter__方法,但是必须返回自身 定义了 next 方法,在 python3.x 是__next__。用来返回下一个值,并且当没有数据了,抛出StopIteration ...
def __next__(self):# Store current value ofx x = self.x # Stop iteration if limit is reached if x > self.limit:raise StopIteration # Else increment and return old value self.x = x + 1;return x # Prints numbers from 10 to 15 for i in Test(15):print(i)# Prints nothing for ...
编译自 | https://opensource.com/article/18/3/loop-better-deeper-look-iteration-python 作者| Trey Hunner 译者| MjSeven 共计翻译:40篇 贡献时间:114 天 深入探讨 Python 的 循环来看看它们在底层如何工作,以及为什么它们会按照它们的方式工作。