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Python 3.8.1

Release Date: Dec. 18, 2019

This is Python 3.8.1, the first maintenance release of Python 3.8

The Python 3.8 series is the newest major release of the Python programming language, and it contains many new features and optimizations.

Major new features of the 3.8 series, compared to 3.7

  • PEP 572, Assignment expressions
  • PEP 570, Positional-only arguments
  • PEP 587, Python Initialization Configuration (improved embedding)
  • PEP 590, Vectorcall: a fast calling protocol for CPython
  • PEP 578, Runtime audit hooks
  • PEP 574, Pickle protocol 5 with out-of-band data
  • Typing-related: PEP 591 (Final qualifier), PEP 586 (Literal types), and PEP 589 (TypedDict)
  • Parallel filesystem cache for compiled bytecode
  • Debug builds share ABI as release builds
  • f-strings support a handy = specifier for debugging
  • continue is now legal in finally: blocks
  • on Windows, the default asyncio event loop is now ProactorEventLoop
  • on macOS, the spawn start method is now used by default in multiprocessing
  • multiprocessing can now use shared memory segments to avoid pickling costs between processes
  • typed_ast is merged back to CPython
  • LOAD_GLOBAL is now 40% faster
  • pickle now uses Protocol 4 by default, improving performance

There are many other interesting changes, please consult the "What's New" page in the documentation for a full list.

More resources

Windows users

  • The binaries for AMD64 will also work on processors that implement the Intel 64 architecture. (Also known as the "x64" architecture, and formerly known as both "EM64T" and "x86-64".)
  • There are now "web-based" installers for Windows platforms; the installer will download the needed software components at installation time.
  • There are redistributable zip files containing the Windows builds, making it easy to redistribute Python as part of another software package. Please see the documentation regarding Embedded Distribution for more information.

macOS users

  • For Python 3.8.0, we provide one installer: 64-bit-only that works on macOS 10.9 (Mavericks) and later systems.
  • Please read the "Important Information" displayed during installation for information about SSL/TLS certificate validation and the running the "Install Certificates.command".

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Hello, good evening, and welcome to 'It's A Living'. The rules are very simple: each week we get a large fee; at the end of that week we get another large fee; if there's been no interruption at the end of the year we get a repeat fee which can be added on for tax purposes to the previous year or the following year if there's no new series.

Every contestant, in addition to getting a large fee is entitled to three drinks at the BBC or if the show is over, seven drinks - unless he is an MP, in which case he can have seven drinks before the show, or a bishop only three drinks in toto. The winners will receive an additional fee, a prize which they can flog back and a special fee for a guest appearance on 'Late Night Line Up'. Well, those are the rules, that's the game, we'll be back again same time next week. Till then. Bye-bye.

Full Changelog

Files

Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release f215fa2f55a78de739c1787ec56b2bcd 23978360 SIG
XZ compressed source tarball Source release b3fb85fd479c0bf950c626ef80cacb57 17828408 SIG
macOS 64-bit installer Mac OS X for OS X 10.9 and later d1b09665312b6b1f4e11b03b6a4510a3 29051411 SIG
Windows help file Windows f6bbf64cc36f1de38fbf61f625ea6cf2 8480993 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 4d091857a2153d9406bb5c522b211061 8013540 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 3e4c42f5ff8fcdbe6a828c912b7afdb1 27543360 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 662961733cc947839a73302789df6145 1363800 SIG
Windows x86 embeddable zip file Windows 980d5745a7e525be5abf4b443a00f734 7143308 SIG
Windows x86 executable installer Windows 2d4c7de97d6fcd8231fc3decbf8abf79 26446128 SIG
Windows x86 web-based installer Windows d21706bdac544e7a968e32bbb0520f51 1325432 SIG