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Python两个整数相除得到浮点数值的方法

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Jun 06, 2016 am 11:22 AM

python

在python中进行两个整数相除的时候，在默认情况下都是只能够得到整数的值，而在需要进行对除所得的结果进行精确地求值时，想在运算后即得到浮点值，那么如何进行处理呢？

1、修改被除数的值为带小数点的形式即可得到浮点值，这种方法在被除数事先知道的情况下才可以采用有效，而这种情况意味着被除数的值是写死的、固定的，在绝大多数的情况下是不可行的；

2、在进行除法运算前导入一个实除法的模块，即可在两个整数进行相除的时候得到浮点的结果;

代码如下:

from __future__ import division

以下为测试的结果：

代码如下:

ufo@ufo:~$ python
Python 2.7.4 (default, Sep 26 2013, 03:20:56)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 244158112/1024
238435
####注意以上的运算结果为整数
####导入实除法模块后的结果为浮点数
>>> from __future__ import division
>>> 244158112/1024
238435.65625
>>> 244158112/1024/1024
232.84732055664062

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