如何让python返回浮点？

Question

I want python to return 0.5 if I write 1/2 (and not 1.0/2.0). how do I make python to return the floating point? (I tried using getcontext().prec form decimal module)

thanks

Ariel

Answer 1

使用它，或切换到Python 3.0+

from __future__ import division

Answer 2

from __future__ import division

Answer 3

Python 3.x works the way you want by default.

Python 2.2 and greater support from __future__ import division , which makes / return floating point. There is also the // operator that still performs integer division when needed.

Also see PEP238 - Changing the Division Operator .