I have been using Python 3.14 as my primary version while teaching and writing one-off scripts for over 6 months. My favorite features are the ones that immediately impact newer Python users.
My favorite new features in Python 3.14:
- All the color (REPL & PDB syntax highlighting, argparse help, unittest, etc.)
- pathlib's copy & move methods: no more need for shutil
- date.strptime: no more need for datetime.strptime().date()
- uuid7: random but also orderable/sortable
- argparse choice typo suggestions
- t-strings: see awesome-t-strings for libraries using them
- concurrent subinterpreters: the best of both threading & multiprocessing
- import tab completion