The latest version of Python 2 is Python 2.7.18. ... Primary differences between Python 2 and 3 include the following: Unicode. By default, Python 3 encodes strings using Unicode rather than ASCII.

Python 3.11's latest improvements. The Python release team claimed in the release notes that Python 3.11 “is up to 10-60 percent faster than Python 3.10”, and reported measuring 1.22x speedups ...