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Interviewer ( John Cleese): You know I really enjoy interviewing applicants for this management training course. More resourcesĪnd Now for Something Completely Different You can find a more comprehensive list in this release's " What's New" document. A number of standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by PEP 384.

A number of Python modules (_abc, audioop, _bz2, _codecs, _contextvars, _crypt, _functools, _json, _locale, operator, resource, time, _weakref) now use multiphase initialization as defined by PEP 489.A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using PEP 590 vectorcall.BPO 1635741, when Python is initialized multiple times in the same process, it does not leak memory anymore.BPO 39926, Unicode support updated to version 13.0.0.BPO 38692, os.pidfd_open added that allows process management without races and signals.BPO 38379, garbage collection does not block on resurrected objects.PEP 616, String methods to remove prefixes and suffixes.

PEP 615, Support for the IANA Time Zone Database in the Standard Library.

PEP 614, Relaxing Grammar Restrictions On Decorators.

PEP 602, Python adopts a stable annual release cadence.

PEP 593, Flexible function and variable annotations.

PEP 585, Type Hinting Generics In Standard Collections.

PEP 573, Module State Access from C Extension Methods.

Some of the new major new features and changes in Python 3.9 are: Major new features of the 3.9 series, compared to 3.8 There's been 146 commits since 3.9.5 which is a similar amount compared to 3.8 at the same stage of the release cycle. Python 3.11 is now the latest feature release series of Python 3. Note: The release you're looking at is Python 3.9.6, a bugfix release for the legacy 3.9 series. Release Date: JThis is the sixth maintenance release of Python 3.9