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Python 3.6.5rc1

Release Date: 2018-03-13

Python 3.6.5rc1 is a release candidate preview of the fifth maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations.

Among the new major new features in Python 3.6 are:

  • PEP 468, Preserving Keyword Argument Order
  • PEP 487, Simpler customization of class creation
  • PEP 495, Local Time Disambiguation
  • PEP 498, Literal String Formatting
  • PEP 506, Adding A Secrets Module To The Standard Library
  • PEP 509, Add a private version to dict
  • PEP 515, Underscores in Numeric Literals
  • PEP 519, Adding a file system path protocol
  • PEP 520, Preserving Class Attribute Definition Order
  • PEP 523, Adding a frame evaluation API to CPython
  • PEP 524, Make os.urandom() blocking on Linux (during system startup)
  • PEP 525, Asynchronous Generators (provisional)
  • PEP 526, Syntax for Variable Annotations (provisional)
  • PEP 528, Change Windows console encoding to UTF-8
  • PEP 529, Change Windows filesystem encoding to UTF-8
  • PEP 530, Asynchronous Comprehensions

Please see What’s New In Python 3.6 for more information. Note that 3.6.5rc1 is a preview release and thus its use is not recommended for production environments.

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".)
  • If installing Python 3.6 as a non-privileged user, you may need to escalate to administrator privileges to install an update to your C runtime libraries.
  • 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

  • NEW as of 3.6.5: we are providing two binary installer options for download. The new variant works on macOS 10.9 (Mavericks) and later systems and comes with its own batteries-included version oF Tcl/Tk 8.6 for users of IDLE and other tkinter-based GUI applications. It is 64-bit only as Apple is deprecating 32-bit support in future macOS releases. For 3.6.5, the 10.9+ variant is offered as an additional more modern alternative to the traditional 10.6+ variant in earlier 3.6.x releases. The 10.6+ variant still requires installing a third-party version of Tcl/Tk 8.5. If you are using macOS 10.9 or later, consider using the new installer variant, unless you are building Python applications that also need to work on older macOS systems. Binary extension modules (including wheels) built for earlier versions of 3.6.x with the 10.6 variant should continue to work with either 3.6.5 variant without recompilation.
  • If you are using Python 3.6.5 from one of the python.org binary installers linked to on this page, please carefully read the Important Information displayed during installation; this information is also available after installation by clicking on /Applications/Python 3.6/ReadMe.rtf. There is important information there about changes in the 3.6 installer-supplied Python, particularly with regard to SSL certificate validation.

Full Changelog

Files

Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 817816b8f2f11e894e97ea17575187e3 22740755 SIG
XZ compressed source tarball Source release 4c896ef2089a0f3bf95328f9e8ad4cc7 17016364 SIG
macOS 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later 5651b669bc14f28e435514e5ba7749ae 27847853 SIG
macOS 64-bit installer Mac OS X for OS X 10.9 and later e6f814f6dbc0cb2d2f6da5a7cbbcbfb0 26741934 SIG
Windows help file Windows 3b5acfc3b127caaf00af2fca8608fcd8 8064398 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 887df5dde6ef632b82014f38d86a780a 7363538 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 7d254133e1a34b52efe089bae5437de1 31897072 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 d4ba777051fd5e462d8c6be3c3898754 1326992 SIG
Windows x86 embeddable zip file Windows 0e63d7c344c861fa13a3aec6910faca7 6603838 SIG
Windows x86 executable installer Windows 03441043845ff273bc8748b897cd1d8c 30847112 SIG
Windows x86 web-based installer Windows b418c1533f7aabac8d2ba984a967e9d3 1298344 SIG