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...
while True in Python creates an infinite loop that continues until a break statement or external interruption occurs. Python lacks a built-in do-while loop, but you can emulate it using a while True loop with a break statement for conditional termination.With...
while True: user_input = input("Enter password: ") # terminate the loop when user enters exit if user_input == 'exit': print(f'Status: Entry Rejected') break print(f'Status: Entry Allowed') Output Enter password: Python is Fun Status: Entry Allowed Enter password: exit Status: Entry...
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。
while True: break b = time.perf_counter() while_true_time = (b - a) / n_times - for_loop_time # 测试while_1 a = time.perf_counter() for j in range(n_times): for _i in range(n_rows): while 1: break b = time.perf_counter() ...
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 <...
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 program block. The condition is checked every time at the beginning of...
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 »...
1#与其它语言else 一般只与if 搭配不同,在Python 中还有个while ...else 语句,while 后面的else 作用是指,当while 循环正常执行完,中间没有被break 中止的话,就会执行else后面的语句2count =03whilecount <= 5:4count += 15print("Loop",count)67else:8print("循环正常执行完啦")9print("---out of ...