As we know that, in python 2.x, integer would be got if we divide two integer values. However, if using the furture (it's might be a lib or something like that), just like from __future__ import division, we can get float value. E.g.:

>>> 3/2
1
>>> from __future__ import division
>>> 3/2
1.5
>>> 
>>> 
>>> 3//2
1
>>> 4/3
1.3333333333333333
>>> 

So, '//' instead of '/' should be used if getting integer after imported division, but I want to know how to using '/' to get integer again. That is mean, whether there is some way to un-import or remove the libs which was imported before.