这个过程一直持续到test_expression评估结果为False为止。 在Python中,while循环的主体是通过缩进确定的。 主体以缩进开始,第一条未缩进的线标记结束。 Python将任何非零值解释为True。None并且0被解释为False。 While循环流程图 Python中while循环的流程图 示例:Python while循环 示例 # 添加自然数的程序# 数字最多# ...
Here, the condition of the while loop is alwaysTrue. However, if the user entersend, the loop termiantes because of thebreakstatement. Pythonwhileloop with anelseclause In Python, awhileloop can have an optionalelseclause - that is executed once the loop condition isFalse. For example, coun...
after we do all of our print statements. If you put the condition in the head of the loop, then the test will happen before it starts each run. Python While 7 Activity: We’ll make a battleship game on a 3×3 grid where you play against the computer. The ship will be 1×1 in ...
解决While loop问题 - Python 当我们在使用while循环时,需要确保循环的终止条件最终会被满足,否则循环将会无限执行下去。通常情况下,我们可以在循环内部修改循环控制变量,使得终止条件得以满足。 1、问题背景 一位开发者在使用 Python 开发一个基于文本的游戏时,遇到了 while 循环的问题。他将游戏代码和音频处理代码结...
Python While 循环语句 Python 编程中 while 语句用于循环执行程序,即在某条件下,循环执行某段程序,以处理需要重复处理的相同任务。其基本形式为: while判断条件(condition):执行语句(statements)…… 执行语句可以是单个语句或语句块。判断条件可以是任何表达式,任何非零、或非空(null)的值均为true。
Python does not have a built-in "do-while" loop, but you can emulate its behavior. Emulating Do-While Behavior To emulate a "do-while" loop in Python, you can use a while loop with a True condition and strategically place a break statement. Here's an example: while True: # Execute...
如果你對for迴圈或if陳述句不熟悉,可以閱讀〈Python for 迴圈(loop)的基本認識與7種操作〉、〈Python if 陳述句的基礎與3種操作〉。 Python while 迴圈句基本認識 先來看一個簡單的while迴圈。 例子是這樣的,你要用Python印出1到100。你可以設定一個變數i,並在while後頭陳述符合需求的條件,條件是只要i小於...
While loop 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...
Suppose you write awhileloop that never ends due to an internal error. Getting back to the example in the initial section of this tutorial, you have the following loop that runs continuously: Python >>>number=5>>>whilenumber!=0:...print(number)...number-=2...531-1-3-5-7-9-11Trac...
How To Make A While Loop in Python Now that you know what you need to construct a while loop, all that is left to do now is to look at a real-life example where the while loop is used before you start making exercises on your own! Consider the following example: # Take user input...