from __future__ import XXX

from __future__ import division,
from __future__ import absolute_import,
from __future__ import with_statement. Wait. With
these, if your python version is python2.X, you have to use these functions as python3.X.

After adding the sentence from __future__ import print_function at the beginning, even in python2.X, you have to use print with parentheses like python3.X. In python2.X, print does not require parentheses, but in python3.X they do.

# python2.7
print "Hello world"

# python3
print("Hello world")

 

 

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