Guessing PEP 632 should also be listed in these, though the only change
right now is a deprecation warning when importing distutils. But
publicity is important!
Cheers,
Steve
On 2/3/2021 10:56 AM, Pablo Galindo Salgado wrote:
Well, this one took a bit more time due to some surprise last time
reference leaks and release blockers to fix, but now Python 3.10.0a5
it’s here. Will this be the first release announcement of the 3.10
series without copy-paste typos? Go get it here:
https://www.python.org/downloads/release/python-3100a5/
<https://www.python.org/downloads/release/python-3100a5/>
*Major new features of the 3.10 series, compared to 3.9
*
Python 3.10 is still in development. This release, 3.10.0a5 is the fifth
of seven planned alpha releases. Alpha releases are intended to make it
easier to test the current state of new features and bug fixes and to
test the release process. During the alpha phase, features may be added
up until the start of the beta phase (2021-05-03) and, if necessary, may
be modified or deleted up until the release candidate phase
(2021-10-04). Please keep in mind that this is a preview release and its
use is not recommended for production environments.
Many new features for Python 3.10 are still being planned and written.
Among the new major new features and changes so far:
* PEP 623 <https://www.python.org/dev/peps/pep-0623/> – Remove wstr
from Unicode
* 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.
* bpo-38605 <https://bugs.python.org/issue38605>: |from __future__
import annotations| (PEP 563
<https://www.python.org/dev/peps/pep-0563/>) is now the default.
* 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.
* (Hey, fellow core developer, if a feature you find important is
missing from this list, let Pablo know <mailto:pablog...@python.org>.)
The next pre-release of Python 3.10 will be 3.10.0a6, currently
scheduled for 2021-03-01.
And now for something completely different
The Chandrasekhar limit is the maximum mass of a stable white dwarf
star. White dwarfs resist gravitational collapse primarily through
electron degeneracy pressure, compared to main sequence stars, which
resist collapse through thermal pressure. The Chandrasekhar limit is the
mass above which electron degeneracy pressure in the star’s core is
insufficient to balance the star’s own gravitational self-attraction.
Consequently, a white dwarf with a mass greater than the limit is
subject to further gravitational collapse, evolving into a different
type of stellar remnant, such as a neutron star or black hole. Those
with masses up to the limit remain stable as white dwarfs. The currently
accepted value of the Chandrasekhar limit is about 1.4 M☉ (2.765×1030
kg). So we can be safe knowing that our sun is not going to become a
black hole!
Regards from cloudy London,
Pablo Galindo Salgado
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