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Python 3.6.2rc1

Release Date: 2017-06-17

Python 3.6.2rc1 is a release candidate preview of the second maintenance release of Python 3.6. The Python 3.6 series contains many new features and optimizations. See the What’s New In Python 3.6 document for more information.

Major new features of the 3.6 series, compared to 3.5

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

Note that 3.6.2rc1 is a preview release and thus its use is not recommended for production environments.

More resources

Notes on this release

  • 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".) They will not work on Intel Itanium Processors (formerly "IA-64").
  • Windows users: 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.
  • Windows users: There are now "web-based" installers for Windows platforms; the installer will download the needed software components at installation time.
  • Windows Users: 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: If you are using the Python 3.6 from the python.org binary installer linked 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.
  • macOS users: There is important information about IDLE, Tkinter, and Tcl/Tk on macOS here.

Full Changelog

Files

Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release d04b737d6cc5e1f8761065b24a3e5713 22580230 SIG
XZ compressed source tarball Source release 6aea0d9e780c3e9167624511b2d6f715 16909384 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later d3c641f6ed8061ee28b648b43c683756 27552814 SIG
Windows help file Windows ab66c4e7720bf084c46f33b7a574879f 8008443 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64, not Itanium processors 19b2e19aa9fc041b9c8537c04ddad0ce 7041335 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64, not Itanium processors 04c19309f40d58842549b5f15752f94c 31425536 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64, not Itanium processors eed6ffc3bf3140797ad70c8efaca4f56 1312824 SIG
Windows x86 embeddable zip file Windows 0d86526564b66115db2ed839d81b1848 6326633 SIG
Windows x86 executable installer Windows 191a963f9fc193688c717ac670a1f8f5 30506376 SIG
Windows x86 web-based installer Windows a35daba6f1a7aab7b1bd2f6ed564aa5e 1287416 SIG