python②可相信除法

python二和python三除法的最大分别:

Python少将三个整数相除,暗许结果是为整数的。但大家得以经过上边包车型客车诀要,使得七个整数相除的结果为小数。

python2:

图片 1from __future__ import division
图片 2
图片 3print 7/3

print 500/1000

出口结果:

python2结果:取整数部分,小数并未有保留

2.3333333333

0

Process finished with exit code 0

 

python3:

print 500/1000

python3结果:收获真正结果,小数保留

0.5

Process finished with exit code 0

 

那么,借使python二想保留小数部分,要如何做呢?

只要求追加一个导入包.就能够了.并不供给其余操作

from __future__ import division #用于/相除的时候,保留真实结果.小数

 

追加导入包后的,python二操作:

#coding:utf-8
from __future__ import division

print 500/1000

结果:

0.5

Process finished with exit code 0

 

还有另一种方式.将除数或被除数八个别的至少2个转变到float型:

print float(500)/1000

结果:

0.5

Process finished with exit code 0

 

 

 

 

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