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What is the future Python 2 or Python 3?

+3 votes
636 views

The http://www.python.org site says that the future is Python 3, yet whenever I try something new in Python, such as Tkinter, everything seems to default to Python 2.

By this I mean that, whenever I find that I need to install another package, it shows up as Python 2 unless I explicitly specify Python 3.

What's the deal? If I want to make a distributable software package, should it be 2 or 3?

posted Dec 27, 2013 by Deepak Dasgupta

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The future is indeed Python 3. The problem with the future is that it's  not here yet.
commented Dec 27, 2013 by Anderson

2 Answers

+1 vote

The past is Python 2; the future is Python 3. The present is both Pythons, running in parallel; if you're lucky, that's 2.7 and the latest 3.x, though not everyone has that luxury.

For new code, aim for Python 3 unless you have a good reason to go for Python 2. Most Linux distributions come with Python 2 under the name "python", and Python 3 under the name "python3"; stick with that and you'll be fairly safe. Or, if you can depend on your users having a recent Py3 installed, you can use the launcher packaged with 3.3 and later, which can intelligently figure out version.

answer Dec 27, 2013 by Seema Siddique
+1 vote

Always use 3 unless you absolutely have to use 2. Python 3 is not a shiny new thing. It is *five* years old at this point and is soon to have its *fifth* significant release. Python 2.6 is EOL, and there will not be a 2.8.

However, people have stayed with Python 2 for various reasons, and unfortunately, many of those people haven't even made an effort to migrate until the last year or so.

Most of the major third-party libraries these days are either 3.x compatible or have 3.x-compatible replacements, though.

answer Dec 27, 2013 by Seema Siddique
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