Make make_new_application.py compatible with both python2 and python3

[lindsayad]

• Replace print 'text' with print('text')
• Use str.upper() and str.lower() instead of string.upper() and string.lower()
• Use the encoding option from io's open such that python3 can read in the test exodus binary

[friedmud]

I'm not for this change (but I can be overruled).

The entire MOOSE ecosystem depends on Python2. We shouldn't give any false hope of anything ever working with Python3.

Years from now we'll do a "big switch"... but that time isn't here yet.

[permcody]

As long as it's backwards compatible, this is fine. We've had people put in Python3 "fixes" before that do NOT work with python 2.6 (our current minimum version). That'll be the test for this one PR before we merge.

Thanks Alex!

[lindsayad]

Thanks Cody.

If the goal is to be compatible with python 2.6, then the call to subprocess.check_output here is going to produce an AttributeError.

[lindsayad]

In terms of stork use, the only evidence I have of people trying (and failing) to use a python version < 2.7 comes from the message board: https://groups.google.com/forum/#!searchin/moose-users/subprocess.check_output%7Csort:relevance/moose-users/qq9KhzfQF98/a-pAMdxx5MYJ, where @permcody suggests he's using "a very old version of python" :-) Are we sure we need to be backwards compatible with versions < 2.7?

[permcody]

touché...

We upped our minimum version to 2.7 somewhat recently but I had forgotten. Thanks for digging that up.

On Thu, Aug 18, 2016 at 11:52 AM Alex Lindsay notifications@github.com wrote:

In terms of stork use, the only evidence I have of people trying (and failing) to use a python version < 2.7 comes from the message board: https://groups.google.com/forum/#!searchin/moose-users/subprocess.check_output%7Csort:relevance/moose-users/qq9KhzfQF98/a-pAMdxx5MYJ, where @permcody https://github.com/permcody suggests he's using "a very old version of python" :-) Are we sure we need to be backwards compatible with versions < 2.7?

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[lindsayad]

I assume that you're going to test on your end? I've tested on both 2.7 and 3.5

[lindsayad]

This is deprecated, so I don't care anymore.