python while loop I have difficulties understanding how this code outputs the values below. Code: i = 0 x = 0 while i < 4: print(x) x+=i i+=1 Output: 0 0 1 3 pythonwhile 29th Mar 2021, 11:47 AM Gorden Yong Kung Hee3
In Python, we use awhileloop to repeat a block of code until a certain condition is met. For example, number =1whilenumber <=3:print(number) number = number +1 Output 1 2 3 In the above example, we have used awhileloop to print the numbers from1to3. The loop runs as long as ...
The while loop runs as long as the expression (condition) evaluates to True and execute the program block. The condition is checked every time at the beginning of the loop and the first time when the expression evaluates to False, the loop stops without executing any remaining statement(s). ...
«loop»WhileLoop+condition: bool+execute() : voidCodeBlock+execute() : voidLoopControl+execute() : void 在这个类图中,有三个类:WhileLoop、CodeBlock和LoopControl。 WhileLoop类表示while循环的结构,它具有一个布尔类型的condition属性,和一个execute方法。 CodeBlock类表示while循环中的代码块,它也有一...
The while Loop With thewhileloop we can execute a set of statements as long as a condition is true. ExampleGet your own Python Server Print i as long as i is less than 6: i =1 whilei <6: print(i) i +=1 Try it Yourself »...
print(f"This is loop number {count + 1}") 在上述代码中,使用了for循环,遍历范围为range(max_count),即从0到max_count-1。在每次循环中,打印当前循环次数。这样可以实现与计数器变量相同的效果。 三、使用break语句 还有一种方法是使用break语句,在while循环中手动控制循环次数。通过在循环体中判断计数器是否...
一、WHILE循环的基本语法 Python的while循环的基本语法如下: while condition: # code block condition:这是一个布尔表达式。当其值为True时,循环体内的代码将继续执行。 code block:循环体内的代码,当condition为True时将被反复执行。 示例: 以下是一个简单的示例,展示如何使用while循环打印数字1到5: ...
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whilevar==1:# 表达式永远为 true num=int(input("输入一个数字 :")) print("你输入的数字是: ", num) print("Good bye!") 执行以上脚本,输出结果如下: 1 2 3 输入一个数字 :5 你输入的数字是:5 输入一个数字 : 你可以使用 CTRL+C 来退出当前的无限循环。
Run Code Output 0 1 2 3 Here, the loop runs four times. In each iteration, we have displayed Hi. Since we are not using the items of the sequence(0, 1, 2 and 4) in the loop body, it is better to use _ as the loop variable. Also read: Python while loopBefore...