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Python 3.8.0

Release Date: Oct. 14, 2019

This is the stable release of Python 3.8.0

Note: The release you're looking at is Python 3.8.0, an outdated release. Python 3.9 is now the latest feature release series of Python 3. Get the latest release of 3.9.x here.

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".

And now for something completely different

Interviewer: And how long have you been here?
Camel spotter: Three years.
Interviewer: So, in, er, three years you've spotted no camels?
Camel spotter: Yes in only three years. Er, I tell a lie, four, be fair, five. I've been camel spotting for just the seven years. Before that of course I was a Yeti Spotter.
Interviewer: A Yeti Spotter, that must have been extremely interesting.
Camel spotter: Oh, it was extremely interesting, very, very - quite... it was dull; dull, dull, dull, oh God it was dull. Sitting in the Waterloo waiting room. Of course once you've seen one Yeti you've seen them all.

Full Changelog

Files

Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release e18a9d1a0a6d858b9787e03fc6fdaa20 23949883 SIG
XZ compressed source tarball Source release dbac8df9d8b9edc678d0f4cacdb7dbb0 17829824 SIG
macOS 64-bit installer Mac OS X for OS X 10.9 and later f5f9ae9f416170c6355cab7256bb75b5 29005746 SIG
Windows help file Windows 1c33359821033ddb3353c8e5b6e7e003 8457529 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 99cca948512b53fb165084787143ef19 8084795 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 29ea87f24c32f5e924b7d63f8a08ee8d 27505064 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 f93f7ba8cd48066c59827752e531924b 1363336 SIG
Windows x86 embeddable zip file Windows 2ec3abf05f3f1046e0dbd1ca5c74ce88 7213298 SIG
Windows x86 executable installer Windows 412a649d36626d33b8ca5593cf18318c 26406312 SIG
Windows x86 web-based installer Windows 50d484ff0b08722b3cf51f9305f49fdc 1325368 SIG