Python 3.10 came out last week.

The most interesting feature included is PEP 622 -- Structural Pattern Matching https://www.python.org/dev/peps/pep-0622/ , similar to Scheme's (match), but a bit less powerful and spelled in Python. That's worth an #HPREp.

The most interesting feature *not* included was PEP 563 -- Postponed Evaluation of Annotations https://www.python.org/dev/peps/pep-0563/, which was slated for inclusion but was pushed to 3.11 to sort out some details regarding libraries like Pydantic that rely on reflection on declared types.

#python #python310 #python3100