python2规范除法

python2和python三除法的最大差异:

Python中校三个整数相除,暗中同意结果是为整数的。但我们得以经过上面的主意,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,小数并未保存

2.3333333333

0

Process finished with exit code 0

 

python3:

print 500/1000

python3结果:获得真正结果,小数保留

0.5

Process finished with exit code 0

 

那正是说,要是python2想保留小数部分,要怎么办吧?

只需求扩充二个导入包.就能够了.并不供给其它操作

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

 

再有另1种格局.将除数或被除数三个其余至少一个转变来float型:

print float(500)/1000

结果:

0.5

Process finished with exit code 0

 

 

 

 

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