python2和python3除法的最大区别:
python2:
print 500/1000
python2结果:取整数部分,小数并没有保留
0
Process finished with exit code 0
python3:
print 500/1000
python3结果:得到真实结果,小数保留
0.5
Process finished with exit code 0
那么,如果python2想保留小数部分,要怎么做呢?
只需要增加一个导入包.就可以了.并不需要其它操作
from __future__ import division #用于/相除的时候,保留真实结果.小数
增加导入包后的,python2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.将除数或被除数两个其它至少一个转换成float型:
print float(500)/1000
结果:
0.5
Process finished with exit code 0
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