python3 的 round 函数的 练习

python3 的 round 函数感觉很别扭，其运算结果与习惯不相符。特记录下来：

代码

''' python 3的 round 函数 是“四舍六入五成双”的 https://www.zhihu.com/question/20128906 ''' print('python 3的 round 函数：四舍六入五成双') print('\nround(-3.5) = ', round(-3.5)) print('\nround(-2.5) = ', round(-2.5)) print('round(-1.5) = ', round(-1.5)) print('\nround(-0.5) = ', round(-0.5)) print('round(0.5) = ', round(0.5)) print('\nround(1.5) = ', round(1.5)) print('round(2.5) = ', round(2.5)) print('\nround(3.5) = ', round(3.5)) print('round(4.5) = ', round(4.5)) print('\nround(5.5) = ', round(5.5)) print('round(6.5) = ', round(6.5)) print('\nround(6.5000000000000001) = ', round(6.5000000000000001)) # 小数点后16位 print('round(6.500000000000001) = ', round(6.500000000000001)) # 小数点后15位

效果图

转载于:https://www.cnblogs.com/hhh5460/p/6731157.html