Incomputer science, afor-loop(or simplyfor loop) is acontrol flowstatementfor specifyingiteration, which allows code to beexecutedrepeatedly。(作用:介绍了for循环是什么?) A for-loop has two parts: a header specifying the iteration, and a body which is executed once per...
In computer science, afor-loop(or simplyfor loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly。(作用:介绍了for循环是什么?) A for-loop has two parts: a header specifying the iteration, and a body which is executed once per iteration. (...
在很多的高级语言中都有for循环(for loop)。for语句是编程语言中针对可迭代对象的语句,它的主要作用是允许代码被重复执行。看一段来自维基百科的介绍: Incomputer science, afor-loop(or simplyfor loop) is acontrol flowstatementfor specifyingiteration, which allows code to beexecutedrepeatedly。(作用:介绍了f...
Incomputer science, afor-loop(or simplyfor loop) is acontrol flowstatementfor specifyingiteration, which allows code to beexecutedrepeatedly。(作用:介绍了for循环是什么?) A for-loop has two parts: a header specifying the iteration, and a body which is executed once per iteration. (for循环是什...
使用缩进将for循环的主体与其余代码分开。 for循环流程图Python中for循环的流程图 示例:Python for循环 示例 #程序查找列表中存储的所有数字的总和 #数字清单 numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11] # 用于存储总和的变量 sum = 0 # 遍历列表 for val in numbers: sum = sum+val print("总和...
for…in…循环通常与range()函数一起使用,range()返回一个列表,for…in…遍历列表中的元素。range()函数的声明如下: class range(object)range(stop) ->rangeobjectrange(start,stop[, step]) ->rangeobject 代码说明: range()返回一个range对...
2、如果只有两个参数，那么表示指定的是start和end；3、只有三个参数都存在时，最后一个参数step才表示步长。例如。使用下列for循环语句，将输出20以内的所有奇数：for i in range(1,20,2): print(i,end = ",")运行结果如下：1,3,5,7,9,11,13,15,17,19,>>> 在Python中，使用print()函数时，如...
1defmy_while(loops,step):2i =03numbers =[]45whilei <loops:6print(f"At the top i is {i}")7numbers.append(i)89i +=step10print("Numbers now:", numbers)11print(f"At the bottom i is {i}")121314print("The numbers:")1516fornuminnumbers:17print(num)181920my_while(6,2) ...
```pythonfruits = ["apple", "banana", "cherry", "date"]for fruit in fruits:if fruit == "cherry":breakprint(fruit)print("Loop ends")```输出结果为：```applebananaLoop ends```在上面的示例中，当循环遍历到 `"cherry"` 时，满足条件 `fruit == "cherry"`，`break` 被执行，立即终止了...
三.for语句 3.1 功能 3.2 语法 3.2.1:基本语法 3.2.2:遍历序列类型 3.2.3:遍历可迭代对象或迭代器 3.2.4:for基于range()实现计数循环 3.2.5:for与break,continue,else 3.2.6:for语句小结 一.if语句 1.1 功能 计算机又被称作电脑,意指计算机可以像人脑一样,根据周围环境条件(即expession)的变化做出不同的...