Getting Started With Python while Loops Using Advanced while Loop Syntax The break Statement: Exiting a Loop Early The continue Statement: Skipping Tasks in an Iteration The else Clause: Running Tasks at Natural Loop Termination Writing Effective while Loops in Python Running Tasks Based on a Condit...
With thebreakstatement we can stop the loop even if the while condition is true: Example Exit the loop when i is 3: i =1 whilei <6: print(i) ifi ==3: break i +=1 Try it Yourself » ADVERTISEMENT The continue Statement
A while statement is similar, except that it can be run more than once. The statements inside it are repeatedly executed, as long as the condition holds. Once it evaluates to False, the next section of code is executed. Below is a while loop containing a variable that counts up from 1 ...
Loops are used to repeatedly execute a block of program statements. The basic loop structure in Python is while loop. Here is the syntax.Syntax:while (expression) : statement_1 statement_2 ...The while loop runs as long as the expression (condition) evaluates to True and execute the prog...
Sometimes we want a part of the code to keep running, again and again, until we are ready for it to stop. Let’s see how while loops can help us do this! Python While 1 Run the example: In this code, we import time so we can use a “wait” function called ...
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while 循环 在给定的判断条件为 true 时执行循环体,否则退出循环体。 for 循环 重复执行语句 嵌套循环 你可以在while循环体中嵌套for循环 1.2.循环控制语句 循环控制语句可以更改语句执行的顺序。Python支持以下循环控制语句: break结束全部循环,跳出整个循环 ...
whilen n=n+1 print("n")如上面一段代码,是while语法最简单的例子了,当n foriin[5,4,3,2,1]: pirnt(i)这就是标准的definate loop,以for 关键词的一段循环语句。执行结果就是依次print出5,4,3,2,1。可以看出来,从结构上来说,无论是definate loop 还是indefinate loop,都有一个重复执行的语句,这...
Python will then go back to the condition of the while loop with the new error equal to 12.5. The condition will again be true, and the code is executed. Python will again move back to the condition of the while loop and attempt to re-run the code. Because 3.125 is greater than 1,...
While Loops in PythonKhan Academy