Python for loop vs while loop Thefor loopis usually used in the sequence when the number of iterations is known. For example, # loop is iterated 4 timesforiinrange(4):print(i) Run Code Output 0 1 2 3 Thewhileloop is usually used when the number of iterations is unknown. For example...
After that, we test what the user entered to see if it matches the ship’s location. If it does, Python says “It’s a hit!” and ends the loop. Otherwise, we just put an X on the grid so the user knows he already tried that place. Line 40 takes away one torpedo. Lines 42 ...
Info:To follow along with the example code in this tutorial, open a Python interactive shell on your local system by running thepython3command. Then you can copy, paste, or edit the examples by adding them after the>>>prompt. We’ll create a file calledpassword.pyin our text editor of ...
The else Clause In While Loop Python provides unique else clause to while loop to add statements after the loop termination. This can be better understood by the following example, x =1while(x<=3):print(x) x = x +1else:print("x is now greater than 3") ...
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...
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 » Note:remember to increment i, or else the loop will continue forever. Thewhileloop requires relevant variables to be ready, in this example we need to def...
Consider the following example, which takes user input in a loop: Python >>>whileTrue:...number=int(input("Enter a positive number: "))...print(number)...ifnotnumber>0:...break...Enter a positive number: 11Enter a positive number: 44Enter a positive number: -1-1 ...
For example the following code never prints out anything since before executing the condition evaluates to false. x = 10; while (x < 5): print(x) x += 1 CopyFlowchart: The following while loop is an infinite loop, using True as the condition:...
A block of code that you want to execute repeatedly That's all it takes! 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 ...
Python中实现有限次while循环的方法主要有三种:使用计数器变量、for循环嵌套、使用break语句。最常用的方法是使用计数器变量,通过在while循环内部设置一个计数器,每次循环时递增计数器,直到计数器达到指定次数为止。for循环嵌套和使用break语句也是有效的替代方法,可以根据具体需求选择合适的方法。在实际编程中,选择合适的方...