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Python 3.6.1rc1

Release Date: 2017-03-05

Python 3.6.1rc1 is a release candidate preview of the first 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 3.6.1rc1 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 3.6.0 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 f2e5670eba78c1471b72de98276bf56f 22537629 SIG
XZ compressed source tarball Source release 5919c290d3727d81c3472e6c46fd78b6 16877216 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later 568a2c8c599b4ec18c9a659f30f5deba 27511860 SIG
Windows help file Windows a12497dc74aa6bd882845049dabfc808 7986933 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 5dcc5cc449d7438b68eebc6c0ecbed1b 6926522 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 66bf5210a966245039d72d317a98507b 31388312 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 a09456e420e5534dd3e4f38fb40a95f4 1312896 SIG
Windows x86 embeddable zip file Windows 78b34cb32ebbc02bba43d7469367bf0d 6304871 SIG
Windows x86 executable installer Windows 45232ae82b95a81242ad0e60f089e217 30435600 SIG
Windows x86 web-based installer Windows 278245977c08d5ffa7ea8ca79cc760c9 1287448 SIG