Python 3.9.0 freeware

Python is a remarkably powerful dynamic programming language that is used in a wide variety of application domains. Python is often compared to Tcl, Perl, Ruby, Scheme or Java.

Author Python Software Foundation
Released 2020-10-05
Filesize 25.2001953125 MB
Downloads 2551
OS Windows 2000, Windows 2003, Windows XP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64, Windows 8, Windows 8 x64, Windows 10, Windows 10 x64, Linux, Mac OS X
Installation Instal And Uninstall
Keywords programming language, coding language, object orientation, Python, language, programming
Users' rating
(19 rating)
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Python freeware - The Latest User Reviews
Python freeware - The Latest Versions History
3.9.0 Oct 5, 2020 New Release Some of the new major new features and changes in Python 3.9 are:
PEP 573, Module State Access from C Extension Methods
PEP 584, Union Operators in dict
PEP 585, Type Hinting Generics In Standard Collections
PEP 593, Flexible function and variable annotations
PEP 602, Python adopts a stable annual release cadence
PEP 614, Relaxing Grammar Restrictions On Decorators
PEP 615, Support for the IANA Time Zone Database in the Standard Library
PEP 616, String methods to remove prefixes and suffixes
PEP 617, New PEG parser for CPython
BPO 38379, garbage collection does not block on resurrected objects;
BPO 38692, os.pidfd_open added that allows process management without races and signals;
BPO 39926, Unicode support updated to version 13.0.0;
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;
3.8.5 Jul 21, 2020 New Release
3.8.4 Jul 13, 2020 New Release Major new features of the 3.8 series, compared to 3.7:
PEP 572, Assignment expressions
PEP 570, Positional-only arguments
PEP 587, Python Initialization Configuration (improved embedding)
PEP 590, Vectorcall: a fast calling protocol for CPython
PEP 578, Runtime audit hooks
PEP 574, Pickle protocol 5 with out-of-band data
Typing-related: PEP 591 (Final qualifier), PEP 586 (Literal types), and PEP 589 (TypedDict)
Parallel filesystem cache for compiled bytecode
Debug builds share ABI as release builds
f-strings support a handy = specifier for debugging
continue is now legal in finally: blocks
on Windows, the default asyncio event loop is now ProactorEventLoop
on macOS, the spawn start method is now used by default in multiprocessing
multiprocessing can now use shared memory segments to avoid pickling costs between processes
typed_ast is merged back to CPython
LOAD_GLOBAL is now 40% faster
pickle now uses Protocol 4 by default, improving performance

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