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Python 3.6.3

Release Date: 2017-10-03

Python 3.6.3 is the third 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

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".)
  • 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
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XZ compressed source tarball Source release b9c2c36c33fb89bda1fefd37ad5af9be 16974296 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later ce31f17c952c657244a5cd0cccae34ad 27696231 SIG
Windows help file Windows a82270d7193f9fb8554687e7ca342df1 8020197 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64, not Itanium processors b1daa2a41589d7504117991104b96fe5 7145844 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64, not Itanium processors 89044fb577636803bf49f36371dca09c 31619840 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64, not Itanium processors b6d61642327f25a5ebd1a7f11a6d3707 1312480 SIG
Windows x86 embeddable zip file Windows cf1c75ad7ccf9dec57ba7269198fd56b 6388018 SIG
Windows x86 executable installer Windows 3811c6d3203358e0c0c6b6677ae980d3 30584520 SIG
Windows x86 web-based installer Windows 39c2879cecf252d4c935e4f8c3087aa2 1287056 SIG