将一个简单的 if

本文介绍了将一个简单的 if-then-else 语句放在一行上的处理方法，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

I'm just getting into Python and I really like the terseness of the syntax. However, is there an easier way of writing an if-then-else statement so it fits on one line?

For example:

if count == N: count = 0 else: count = N + 1

Is there a simpler way of writing this? I mean, in Objective-C I would write this as:

count = count == N ? 0 : count + 1;

Is there something similar for Python?

Update

I know that in this instance I can use count == (count + 1) % N.

I'm asking about the general syntax.

解决方案

That's more specifically a ternary operator expression than an if-then, here's the python syntax

value_when_true if condition else value_when_false

Better Example: (thanks Mr. Burns)

'Yes' if fruit == 'Apple' else 'No'

Now with assignment and contrast with if syntax

fruit = 'Apple' isApple = True if fruit == 'Apple' else False

vs

fruit = 'Apple' isApple = False if fruit == 'Apple' : isApple = True