How to use ternary expressions in python

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Ternary expression

Programmers familiar with python + will miss the classic ternary operator when they start using python, because it seems more troublesome to write it in python to express the same idea. For example:

> y = 5 > if y

< 0:print('y是一个负数')else:print('y是一个非负数')y是一个非负数 其实，python 是支持三元表达式的，只是稍微怪异了一点，类似于我们山东人讲话。比如，山东人最喜欢用倒装句：打球去吧，要是不下雨的话；下雨，咱就去自习室。翻译成三元表达式就是： 打球去吧 if 不下雨 else 去自习室 来看看三元表达式具体的使用： >

> > y = 5 > > print ('y is a negative number'if y

< 0 else 'y是一个非负数')y是一个非负数 python 的三元表达式也可以用来赋值： >

> > y = 5 > x =-1 if y

< 0 else 1>

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