Python 2.7 is the last major version in the 2.x series, and is no longer maintained since January 1st 2020. Use the generic [python] tag on all Python questions. Do not add this tag simply to convey the version of Python you're using, unless the question concerns an issue specific to Python 2.7.
For an explanation as to why it's the last 2.x release, see PEP 404.
The End-of-life date for Python 2.7 was set as the 1st of Jan 2020, see PEP 373. The last release of Python 2.7 was 2.7.18, released April 20, 2020.
This guide explains how to choose a Python version for development. All new projects should now target Python 3 unless you have external requirements which still force you to stay on the old version.
Tagging recommendation:
Use the python tag for all Python related questions. If you believe your question includes issues where the version incompatibilities between Python 2.x and Python 3.x are relevant, then add the python-2.x or python-3.x in addition to the main tag. If you believe your question may be even more specific, you can include a version specific tag such as python-2.7.
Please do not mix python-2.x (or a more specific tag such as python-2.7) and python-3.x (ditto) unless you are specifically asking a question about an interoperability problem between versions.
