Python 3.5.0a3

Python 3.5 has reached end-of-life. Python 3.5.10, the final release of the 3.5 series, is available here.

Python 3.5.0a3 was released on March 30th, 2015.

Download

Notes on this release:

• Windows users: if you have previously installed Python 3.5.0a1, you must manually uninstall it before installing Python 3.5.0a3 (issue23612).
• Windows users: If installing Python 3.5.0a3 as a non-privileged user, you may need to escalate to administrator privileges to install an update to your C runtime libraries.

• The OS X installers are now distributed as signed installer package files compatible with the OS X Gatekeeper security feature.
• There are now "web-based" installers for Windows platforms; the installer does not contain Python, but instead downloads just the needed su at installation time.
• The Windows binaries were built with Microsoft Visual Studio 2015, which is not yet officially released. (It's currently offered in "Preview" mode, which is akin to a "beta".) It is our intention to ship Python 3.5 using VS2015, although right now VS2015's final release date is unclear.
• 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").
• There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OS X here.