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...
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). ...
ProgramUserProgramUserloop[count < 10]start the scriptcount = 0print("Hello, World!")count += 1exit the script 结论 通过上述步骤与代码,你已经学会了如何使用Python的while循环打印“Hello, World!”十遍。在此过程中,我们学习了如何初始化计数器、编写循环条件、在循环体内执行打印操作,以及如何更新计数器...
>>>number=5>>>whilenumber!=0:...print(number)...number-=2...531-1-3-5-7-9-11Traceback (most recent call last):...KeyboardInterrupt To terminate this code, you have to pressCtrl+C, which interrupts the program’s execution from the keyboard. Otherwise, the loop would run indefinit...
while 1==1: print("In the loop") This program would indefinitely print "In the loop". You can stop the program's execution by using the Ctrl-C shortcut or by closing the program. 无限循环是一种特殊的while循环;它从不停止运行。它的条件总是正确的。
Teach yourself how to program in Python with our Python tutorial. What is the while loop in Python? The Python while loop is a control structure. Control structures determine which path of code will be followed at runtime. In general, loops are used to repeatedly execute a block of code...
while alive: print("eat") time.sleep(0.3) print("sleep") time.sleep(0.3) print("code") time.sleep(0.3) if counter == 2: break counter = counter + 1 Python While 6 Here, we’re telling Python to break, or stop, the loop when ...
Using thewhileloop 使用while循环 for循环 (Theforloop) Let us first see what's the syntax, 首先让我们看看语法是什么 AI检测代码解析 for [ELEMENT] in [ITERATIVE-LIST]: [statement to execute] else: [statement to execute when loop is over] ...
While Loop The while loop is one of the first loops that you'll probably encounter when you're starting to learn how to program. It is arguably also one of the most intuitive ones to understand: if you think of the name of this loop, you will quickly understand that the word "while"...
所以,你知道单个指令的基本原理,程序就是一系列指令。但是编程的真正优势不仅仅是像周末跑腿一样一个接一个地运行指令。根据表达式的求值方式,程序可以决定跳过指令,重复指令,或者从几条指令中选择一条来运行。事实上,你几乎从来不希望你的程序从第一行代码开始,简单