Python 3.9

E884131

Python 3.9 is a stable release of the Python programming language that introduced features like dictionary union operators, type hinting improvements, and new string methods before being succeeded by Python 3.10.

All labels observed (1)

Label Occurrences
Python 3.9 canonical 8

How this entity was disambiguated

Statements (52)

Predicate Object
instanceOf Python version ⓘ
programming language release ⓘ
developedBy Python Software Foundation ⓘ
fileExtension .py ⓘ
.pyc ⓘ
followedBy Python 3.10 ⓘ
follows Python 3.8 ⓘ
implementation Anaconda Python ⓘ
linked to: Conda

CPython ⓘ
PyPy ⓘ
introducedFeature annotations postponed by default (from __future__ import annotations promoted) ⓘ
dict merge and update operators ⓘ
dictionary in-place union operator |= ⓘ
dictionary union operator | ⓘ
graphlib module with TopologicalSorter ⓘ
improved type hinting support ⓘ
improvements to asyncio ⓘ
improvements to asyncio streams ⓘ
improvements to functools module ⓘ
improvements to garbage collection ⓘ
improvements to json and csv modules ⓘ
improvements to multiprocessing and concurrent.futures ⓘ
improvements to os and pathlib modules ⓘ
improvements to random module ⓘ
improvements to typing module ⓘ
new math functions like math.lcm ⓘ
new parser based on PEG ⓘ
new statistics functions like statistics.fmean ⓘ
new string method removeprefix() ⓘ
new string method removesuffix() ⓘ
performance optimizations in CPython core ⓘ
str.replace performance improvements ⓘ
type hinting generics in standard collections ⓘ
zoneinfo module for IANA time zones ⓘ
languageFamily Python 3 ⓘ
linked to: Python 3.x
majorVersion 3 ⓘ
minorVersion 9 ⓘ
partOf Python (programming language) ⓘ
pepNumber 596 ⓘ
platform cross-platform ⓘ
primaryImplementationLanguage C ⓘ
releaseDate 2020-10-05 ⓘ
releaseStatus stable release ⓘ
specifiedBy PEP 596 ⓘ
standardLibraryVersion Python 3.9 standard library ⓘ
supportsParadigm functional programming ⓘ
imperative programming ⓘ
object-oriented programming ⓘ
procedural programming ⓘ
typingDiscipline duck typing ⓘ
dynamic typing ⓘ
gradual typing ⓘ

How these facts were elicited

Referenced by (8)

Full triples — surface form annotated when it differs from this entity's canonical label.

Python 3.10 → follows → Python 3.9 ⓘ
Python 3.10 → precededBy → Python 3.9 ⓘ
Python 3.8 → followedBy → Python 3.9 ⓘ
PEP 585 → pythonVersionIntroduced → Python 3.9 ⓘ
functools.cache → availableSince → Python 3.9 ⓘ
subject linked to: functools
Waitress → supports → Python 3.9 ⓘ
subject linked to: Waitress WSGI server
PEP 614 → createdForVersion → Python 3.9 ⓘ
PEP 614 → implementedInVersion → Python 3.9 ⓘ