如何仅打印for循环中的最后一个值?

本文介绍了如何仅打印for循环中的最后一个值?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

对于下面的代码，我只想打印平方根函数的最后一个近似值，而不是打印出所有近似值.

For the below code, I only want to print the last approximation for the squareroot function, instead of printing out every approximation.

def square(x): guess = int(x/2) for i in range(1,10): nextguess = (guess + x/guess)/2 guess=nextguess print(nextguess)

推荐答案

只需取消您的print()标识即可:

Just de-denting your print() will work:

def square(x): guess = int(x/2) for i in range(1,10): nextguess = (guess + x/guess)/2 guess=nextguess print(nextguess)

循环后，nextguess仍然具有最后一个循环的值. 在Python中，循环不会创建新的作用域.因此，您在循环中创建或更改的所有内容在循环之后仍然可用.

After the loop, nextguess still has the value form the last cycle. In Python, a loop does not create a new scope. So, everything you create or change in the loop is still available after the loop.