Using print function style
Convert this to a real print function (with import).

Did this via 2to3 and added the import to make it work
under Python 2 as well. I would have just tweaked the
print into a formatted string but the script seems to
take forever to run... it might be broken?
Convert many doctests to print functions
Tweak Tutorial print statement/function for Jython 2.7b1

Sadly there seems to be limitations with Jython 2.7b1 and its
support for the print function via:

from __future__ import print_function

We can avoid this by using print(variable) which is valid under
both the old print statement and the new print function.

See http://bugs.jython.org/issue2007