[RELEASE] Python 3.10.0 is available

Pablo Galindo Salgado pablogsal at gmail.com
Mon Oct 4 17:03:44 EDT 2021

On behalf of the Python development community and the Python 3.10 release
team, I’m pleased to announce the availability of Python 3.10.0.
Python 3.10.0 is the newest major release of the Python programming
language, and it contains many new features and optimizations.


# Major new features of the 3.10 series, compared to 3.9

Among the new major new features and changes so far:

* [PEP 623](https://www.python.org/dev/peps/pep-0623/) -- Deprecate and
prepare for the removal of the wstr member in PyUnicodeObject.
* [PEP 604](https://www.python.org/dev/peps/pep-0604/) -- Allow writing
union types as X | Y
* [PEP 612](https://www.python.org/dev/peps/pep-0612/) -- Parameter
Specification Variables
* [PEP 626](https://www.python.org/dev/peps/pep-0626/) -- Precise line
numbers for debugging and other tools.
* [PEP 618 ](https://www.python.org/dev/peps/pep-0618/) -- Add Optional
Length-Checking To zip.
* [bpo-12782](https://bugs.python.org/issue12782): Parenthesized context
managers are now officially allowed.
* [PEP 632 ](https://www.python.org/dev/peps/pep-0632/) -- Deprecate
distutils module.
* [PEP 613 ](https://www.python.org/dev/peps/pep-0613/) -- Explicit Type
* [PEP 634 ](https://www.python.org/dev/peps/pep-0634/) -- Structural
Pattern Matching: Specification
* [PEP 635 ](https://www.python.org/dev/peps/pep-0635/) -- Structural
Pattern Matching: Motivation and Rationale
* [PEP 636 ](https://www.python.org/dev/peps/pep-0636/) -- Structural
Pattern Matching: Tutorial
* [PEP 644 ](https://www.python.org/dev/peps/pep-0644/) -- Require OpenSSL
1.1.1 or newer
* [PEP 624 ](https://www.python.org/dev/peps/pep-0624/) -- Remove
Py_UNICODE encoder APIs
* [PEP 597 ](https://www.python.org/dev/peps/pep-0597/) -- Add optional

[bpo-38605](https://bugs.python.org/issue38605): `from __future__ import
annotations` ([PEP 563](https://www.python.org/dev/peps/pep-0563/)) used to
be on this list
in previous pre-releases but it has been postponed to Python 3.11 due to
some compatibility concerns. You can read the Steering Council
communication about it [here](
to learn more.

# More resources

* [Changelog](https://docs.python.org/3.10/whatsnew/changelog.html#changelog
* [Online Documentation](https://docs.python.org/3.10/)
* [PEP 619](https://www.python.org/dev/peps/pep-0619/), 3.10 Release
* Report bugs at [https://bugs.python.org](https://bugs.python.org).
* [Help fund Python and its community](/psf/donations/).

# And now for something completely different

For a Schwarzschild black hole (a black hole with no rotation or
electromagnetic charge), given a free fall particle starting at the event
horizon, the maximum propper time it will experience to fall into (which
happens when it falls without angular velocity) the singularity is `π*M`
(in [natural units](https://en.wikipedia.org/wiki/Natural_units)), where M
is the mass of the black hole. For Sagittarius A* (the black hole at the
center of the milky way) this time is approximately 1 minute.

Schwarzschild black holes are also unique because they have a space-like
singularity at their core, which means that the singularity doesn't happen
at a specific point in *space* but happens at a specific point in *time*
(the future). This means once you are inside the event horizon you cannot
point with your finger towards the direction the singularity is located
because the singularity happens in your future: no matter where you move,
you will "fall" into it.

# We hope you enjoy the new releases!

Thanks to all of the many volunteers who help make Python Development and
these releases possible! Please consider supporting our efforts by
volunteering yourself or through organization contributions to the Python
Software Foundation.


# More resources

Online Documentation https://docs.python.org/3.10/
PEP 619 https://www.python.org/dev/peps/pep-0619/, 3.10 Release Schedule
Report bugs at https://bugs.python.org https://bugs.python.org/.
Help fund Python and its community https://www.python.org/psf/donations/.

Your friendly release team,
Ned Deily @nad https://discuss.python.org/u/nad
Steve Dower @steve.dower https://discuss.python.org/u/steve.dower
Pablo Galindo Salgado @pablogsal https://discuss.python.org/u/pablogsal

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