The for loop and while loop are two different approaches to executing the loop statements in python. They both serve the same functionality of looping over a python code till a condition is being fulfilled. For loops and while loops differ in their syntax. In while loops, we have to mention...
print(cuisine) 系统输出: 蒸羊羔 蒸鹿尾 烧花鸭 烧雏鸡 烧子鹅 以上我们利用for循环实现了不同的功能。 下面着重介绍一个在for loop中循环使用else语句的例子。else 中的语句会在循环正常执行完的情况下执行。 三、把else语句放进for loop 例5:我们写一个简单的奇数偶数判别代码: 输入: for i in list(range...
numbers=[]whilei<num:print"At the top i is %d"%i numbers.append(i) i=i+stepprint"Numbers now:",numbersprint"At the bottom i is %d"%iprint"The numbers:"forninnumbers:printndeftest_fun2(num,step): numbers=[]foriinrange(0,num,step):print"At the top i is %d"%i numbers.append(i...
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...
在python 中,for … else 表示这样的意思,for 中的语句和普通的没有区别,else 中的语句会在循环正常执行完(即 for 不是通过 break 跳出而中断的)的情况下执行,while … else 也是一样。 实例 #!/usr/bin/python# -*- coding: UTF-8 -*-fornuminrange(10,20):# 迭代 10 到 20 (不包含) 之间的...
Python for循环可以遍历任何序列的项目,如一个列表或者一个字符串。 什么是Python中的for循环? Python中的for循环用于迭代序列(list,tuple,string)或其他可迭代对象。在序列上进行迭代称为遍历。 for循环的语法 for val in sequence: Body of for 在此,val是在每次迭代中获取序列内项目值的变量。 循环继续直到...
Using a for loops in Python we can automate and repeat tasks in an efficient manner. So the bottom line is using the for loop we can repeat the block of statements a fixed number of times. Let’s understand this with an example. As opposed to while loops that execute until a condition...
Next, you'll move on to the for loop: once again, you'll learn how you can construct and use a for loop in a real-life context. You'll also learn the difference between using a while loop and a for loop. Also the topic of nested loops After, you'll see how you can use the ...
这个结果有什么问题？e和i的值不一样啊。e是第一层循环，取值为0，1，2。而i为第二层循环，根据e...
4- Use a “while loop” to print the values contained in “mylist”, one at a time. 1i =02whilei <len_mylist:3print('mylist','[',i,']','=',mylist[i])4i += 1 5- Create a numpy array using the values contained in “mylist”. Name it “myarray”. ...