while True意思是要一直进行loop(死循环),也就是无限循环。死循环就是一个无法结束的循环。出现死循环是因为没有设置好结束条件,循环的结束条件很重要,要充分考虑各种边界情况。在合作式多任务的操作系统中,死循环会使系统没有反应,若是先占式多任务的系统中,死循环会用掉所有可用的处理器时间,不过可以由使用...
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合在一起,但无法同时运行这两个循环。游戏代码使用 while True 循环不断等待玩家输入命令,而音频处理代码也使用 while True 循环不断处理音频消息。当玩家输入命令时,音频会停止播放,直到命令执...
/usr/bin/python# -*- coding: UTF-8 -*-var=1whilevar==1:# 该条件永远为true,循环将无限执行下去num=raw_input("Enter a number :")print"You entered:",numprint"Good bye!" 以上实例输出结果: Entera number:20Youentered:20Entera number:29Youentered:29Entera number:3Youentered:3Entera numb...
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...
http://www.runoob.com/python/python-while-loop.html 2.1.while循环语法: while条件: 执行代码... 实例:循环打印0-100 count=0whilecount<=100: print("loop ",count)count+=1print("---end---") while True:# 当这个条件成立就执行下面的代码print("count:",count)count=count+1# count +=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...
python python-3.x function loops while-loop 我在程序的末尾创建了一个while True循环,以及一个函数repeat(),该函数检查它是否为空字符串,如果在循环中运行,则应该重新启动程序。正当我不确定它是否是特定于版本的。。。 import string import random ascii = string.ascii_letters digits = string.digits punct...
Python Syntax whileTrue:ifcondition_1:break...ifcondition_2:break...ifcondition_n:break This syntax works well when you have multiple reasons to end the loop. It’s often cleaner to break out from several different locations rather than try to specify all the termination conditions in the lo...
or else you're in an infinite loop....
这时就是这样,语法更简单了。直接可以在前面加入for i in range(3),然后把赋值count=0, count+1这些都省去了。 又和Alex老师学了一招,前面loop循环是0123456789,现在想要它loop循环只有偶数02468,可以把for i in range(10)括号内的数字改为(0,10,2),就成功了。