python round 浮点数异常，round(880/884, 4) * 100

Question

为什么其他都没问题，就round(880/884, 4) * 100会出现浮点数异常的，有谁能解释一下吗？

round(880/884, 3) * 100
Out[32]: 99.5

round(880/884, 4) * 100
Out[33]: 99.55000000000001

round(880/884, 4) * 10
Out[34]: 9.955

round(880/884, 4) * 1000
Out[35]: 995.5

round(880/884, 4) * 100
Out[36]: 99.55000000000001

Answer 1

[Python]round四舍五入精度缺失的解决

https://www.cnblogs.com/keanuyaoo/p/3279712.html