mod in Python

[Zhao Quan]

今天在python中做%运算得到了很奇怪的结果

>>> 123.4 % 10

3.4000000000000057

>>> 1.2 % 10

1.2

>>> 100 %10

0

>>> 100.1 % 10

0.09999999999999432

大家看看何解？

[Úcarenya]

没看出有什么不正常, Python默认提供定精度运算，和大部分POSIX工具一样。

如果要高精度计算，
dc <<< '100.1 10 %p'
需要别的模块

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