Python 3.9.0 is released!
Major new features of the 3.9 series, compared to 3.8
Some of the new major new features and changes in Python 3.9 are:
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PEP 573, Module State Access from C Extension Methods
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PEP 584, Union Operators in dict
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PEP 585, Type Hinting Generics In Standard Collections
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PEP 593, Flexible function and variable annotations
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PEP 602, Python adopts a stable annual release cadence
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PEP 614, Relaxing Grammar Restrictions On Decorators
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PEP 615, Support for the IANA Time Zone Database in the Standard Library
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PEP 616, String methods to remove prefixes and suffixes
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PEP 617, New PEG parser for CPython
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BPO 38379, garbage collection does not block on resurrected objects;
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BPO 38692, os.pidfd_open added that allows process management without races and signals;
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BPO 39926, Unicode support updated to version 13.0.0;
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BPO 1635741, when Python is initialized multiple times in the same process, it does not leak memory anymore;
- A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using
PEP 590 vectorcall;
- 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 standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by
PEP 384.
#python, #release
