05_python2_future_print

>>> print(1, 2)
(1, 2)

>>> print(1, 2, sep=',')
  File "<stdin>", line 1
    print(1, 2, sep=',')
                   ^
SyntaxError: invalid syntax

>>> from __future__ import print_function
>>> print(1, 2, sep=',')
1,2