Drop support for EOL Python 3.4

[hugovk]

Python 3.4 is EOL and no longer receiving security updates (or any updates) from the core Python team.

Version	Release date	Supported until
2.7	2010-07-03	2020-01-01
3.4	2014-03-16	2019-03-16

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

It's also little used. Here's the pip installs for bump2version from PyPI for June 2019:

category	percent	downloads
3.6	42.42%	5,873
3.7	32.22%	4,460
2.7	15.17%	2,100
3.5	6.06%	839
3.4	2.14%	296
null	1.54%	213
3.8	0.39%	54
3.3	0.07%	9
Total		13,844

Source: pypistats python_minor bump2version --last-month # pip install pypistats

[levrik]

I'm quite new to Python but couldn't that be expressed as >=2.7, <3.0, >=3.5 or >=2.7, <3.0, >3.4?

[ekohl]

https://www.python.org/dev/peps/pep-0440/#version-specifiers is a bit vague in this regard. The syntax used here in setup.py appears to be quite common from what I've seen. Perhaps this is just people copying each other though :)

[hugovk]

    python_requires=">=2.7, <3.0, >=3.5",

Running pip install -e . on this with Python 3.7 gives:

ERROR: Package 'foo' requires a different Python: 3.7.4 not in '>=2.7, <3.0, >=3.5'

[levrik]

@hugovk Yep. I saw that the , is basically an and.
Also found this: https://packaging.python.org/guides/dropping-older-python-versions/#specify-the-version-ranges-for-supported-python-distributions

[hugovk]

It's a little bit ugly, all the more reason to drop almost-EOL Python 2.7 and write python_requires=">=3.5"!

https://python2woop.pw
https://python3statement.org

[c4urself]

really looking forward to dropping 2.7