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Python 3.10.0a7

Release Date: April 5, 2021

This is an early developer preview of Python 3.10

Major new features of the 3.10 series, compared to 3.9

Python 3.10 is still in development. This release, 3.10.0a7 is the last 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 -- 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.
  • bpo-38605: from __future__ import annotations (PEP 563) is now the default.
  • 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

  • (Hey, fellow core developer, if a feature you find important is missing from this list, let Pablo know.)

The next pre-release of Python 3.10 will be 3.10.0b1 ( the first beta release and feature freeze), currently scheduled for Monday, 2021-05-03.

More resources

And now for something completely different

In physics, the twin paradox is a thought experiment in special relativity involving identical twins, one of whom makes a journey into space in a high-speed rocket and returns home to find that the twin who remained on Earth has aged more. This result appears puzzling because each twin sees the other twin as moving, and so, as a consequence of an incorrect and naive application of time dilation and the principle of relativity, each should paradoxically find the other to have aged less. However, this scenario can be resolved by realising that the travelling twin is undergoing acceleration, which makes him a non-inertial observer. In both views, there is no symmetry between the spacetime paths of the twins. Therefore, the twin paradox is not a paradox in the sense of a logical contradiction.


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release ce7038a423051a7fe03fbe2f4a0f25d6 23.4 MB SIG
XZ compressed source tarball Source release 541c60c4eac4ef59baa4e5dcfe0fad0f 17.6 MB SIG
macOS 64-bit universal2 installer macOS for macOS 10.9 and later, including macOS 11 Big Sur on Apple Silicon (experimental) 1816930afc0323a527814055c873768c 36.3 MB SIG
Windows installer (64-bit) Windows Recommended bf36e4b2628c9deb3e3a0f257cae4e67 26.3 MB SIG
Windows installer (32-bit) Windows 9388f6c671c58fbeab5f29a6ce18b7b8 25.2 MB SIG
Windows help file Windows 3124a8c22fcb40cadd98f7d9aafd0ee9 8.6 MB SIG
Windows embeddable package (64-bit) Windows 2466a33faf9d3d10c380de57cf3b7488 8.0 MB SIG
Windows embeddable package (32-bit) Windows b00998196c9a314ab59746734fa2c229 7.1 MB SIG