Remove Python 2.6 support?

[jayfk]

We are still testing against Python 2.6: any objections to remove formal support for it?

[hugovk]

Drop it and 3.2 as well. Consider dropping 3.3 at the same time, all are EOL. Dropping 3.2 will help get of the strange Unicode handling it requires.

Reasons for dropping old ones

• https://en.wikipedia.org/wiki/CPython#Version_history

2.6

• Unsupported since 2013-10-29
• https://snarky.ca/stop-using-python-2-6/
• http://www.curiousefficiency.org/posts/2015/04/stop-supporting-python26.html
• http://www.python3statement.org
• Current pip 9 deprecates Python 2.6 support, pip 10 won't support it (Drop support for Python 2.6? pypa/pip#3955)
• Not much PyPI traffic (June 2016) Deprecate/Drop Support for Python 3.3? pypa/pip#3796

3.2

• Unsupported since 2016-02-27
• pip 8 no longer supports Python 3.2 (link)
• Coverage 4 no longer supports Python 3.2 (link)
• Requests no longer supports Python 3.2
• Virtually no PyPI traffic (June 2016) Deprecate/Drop Support for Python 3.3? pypa/pip#3796

3.3

• Unsupported since 2017-09-29
• pip 10 will deprecate Python 3.3 support, pip 11 won't support it (Deprecate/Drop Support for Python 3.3? pypa/pip#3796)
• Very little PyPI traffic (June 2016) Deprecate/Drop Support for Python 3.3? pypa/pip#3796

[hugovk]

Please see PR #674.