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Python 3.10.0

Release Date: Oct. 4, 2021

Python 3.10 release logo

This is the stable release 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 -- Deprecate and prepare for the removal of the wstr member in PyUnicodeObject.
  • PEP 604 -- Allow writing union types as X | Y
  • PEP 612 -- Parameter Specification Variables
  • PEP 626 -- Precise line numbers for debugging and other tools.
  • PEP 618 -- Add Optional Length-Checking To zip.
  • bpo-12782: Parenthesized context managers are now officially allowed.
  • PEP 632 -- Deprecate distutils module.
  • PEP 613 -- Explicit Type Aliases
  • PEP 634 -- Structural Pattern Matching: Specification
  • PEP 635 -- Structural Pattern Matching: Motivation and Rationale
  • PEP 636 -- Structural Pattern Matching: Tutorial
  • PEP 644 -- Require OpenSSL 1.1.1 or newer
  • PEP 624 -- Remove Py_UNICODE encoder APIs
  • PEP 597 -- Add optional EncodingWarning

bpo-38605: from __future__ import annotations (PEP 563) 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.

bpo-44828: A change in the newly released macOS 12 Monterey caused file open and save windows in IDLE and other tkinter applications to be unusable. As of 2021-11-03, the macOS 64-bit universal2 installer file for this release was updated to include a fix in the third-party Tk library for this problem. All other files are unchanged from the original 3.10.0 installer. If you have already installed 3.10.0 from here and encounter this problem on macOS 12 Monterey, download and run the updated installer linked below.

More resources

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 (which happens when it falls without angular velocity) it will experience to fall into the singularity is π*M (in natural units), where M is the mass of the black hole. For Sagittarius A* (the black hole at the centre 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.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 729e36388ae9a832b01cf9138921b383 25007016 SIG
XZ compressed source tarball Source release 3e7035d272680f80e3ce4e8eb492d580 18726176 SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later (updated for macOS 12 Monterey) 8575cc983035ea2f0414e25ce0289ab8 39735213 SIG
Windows embeddable package (32-bit) Windows dc9d1abc644dd78f5e48edae38c7bc6b 7521592 SIG
Windows embeddable package (64-bit) Windows 340408540eeff359d5eaf93139ab90fd 8474319 SIG
Windows help file Windows 9d7b80c1c23cfb2cecd63ac4fac9766e 9559706 SIG
Windows installer (32-bit) Windows 133aa48145032e341ad2a000cd3bff50 27194856 SIG
Windows installer (64-bit) Windows Recommended c3917c08a7fe85db7203da6dcaa99a70 28315928 SIG