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Python 3.5.4

Release Date: 2017-08-08

Python 3.5.4

Python 3.5.4 was released on August 8th, 2017.

Python 3.5.4 is the last "bugfix" release of 3.5. The Python 3.5 branch has now entered "security fixes only" mode; going forward, the only improvements made in the 3.5 branch will be security fixes.

Major new features of the 3.5 series, compared to 3.4

Among the new major new features and changes in the 3.5 release series are

  • PEP 441, improved Python zip application support
  • PEP 448, additional unpacking generalizations
  • PEP 461, "%-formatting" for bytes and bytearray objects
  • PEP 465, a new operator (@) for matrix multiplication
  • PEP 471, os.scandir(), a fast new directory traversal function
  • PEP 475, adding support for automatic retries of interrupted system calls
  • PEP 479, change StopIteration handling inside generators
  • PEP 484, the typing module, a new standard for type annotations
  • PEP 485, math.isclose(), a function for testing approximate equality
  • PEP 486, making the Windows Python launcher aware of virtual environments
  • PEP 488, eliminating .pyo files
  • PEP 489, a new and improved mechanism for loading extension modules
  • PEP 492, coroutines with async and await syntax

Notes on this release

  • 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 3.5.1 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.
  • Windows users: Some virus scanners (most notably "Microsoft Security Essentials") are flagging "Lib/distutils/command/wininst-14.0.exe" as malware. This is a "false positive": the file does not contain any malware. We build it ourselves, from source, on a known-clean system. We've asked that this false positive report be removed, and expect action soon. In the meantime, please don't be alarmed to see this warning when installing Python 3.5.2, or when scanning any earlier version of 3.5.
  • OS X users: The OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.
  • OS X users: There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.

Full Changelog


Version Operating System Description MD5 Sum File Size GPG
Gzipped source tarball Source release 2ed4802b7a2a7e40d2e797272bf388ec 20733411 SIG
XZ compressed source tarball Source release fb2780baa260b4e51cbea814f111f303 15332320 SIG
Mac OS X 32-bit i386/PPC installer Mac OS X for Mac OS X 10.5 and later 18bab8161b162add0a9116d50031b347 26565678 SIG
Mac OS X 64-bit/32-bit installer Mac OS X for Mac OS X 10.6 and later 96bf5d47777e8352209f743c06bed555 24874014 SIG
Windows help file Windows b9f45923c41b30a683130fdc71f85a99 7532322 SIG
Windows x86-64 embeddable zip file Windows for AMD64/EM64T/x64 1b56c67f3c849446794a15189f425f53 6934338 SIG
Windows x86-64 executable installer Windows for AMD64/EM64T/x64 4276742a4a75a8d07260f13fe956eec4 29849120 SIG
Windows x86-64 web-based installer Windows for AMD64/EM64T/x64 bb2df5d7b7fb7666201ef2cfaad044b3 974328 SIG
Windows x86 embeddable zip file Windows 3ce7b067ddd9a91bb221351d9370ebe9 6104188 SIG
Windows x86 executable installer Windows 9693575358f41f452d03fd33714f223f 28932168 SIG
Windows x86 web-based installer Windows fd91f7c78fe3a9ad3f270672cecae5d2 949008 SIG