Can't use Python Launcher on Windows after update to 3.5

[Tim Golden]

On 10/09/2015 00:52, Mark Lawrence wrote:
> I've installed 3.5 for all users so it's in C:\Program Files
> 
> From
> https://docs.python.org/3.5/using/windows.html#from-the-command-line it
> says "System-wide installations of Python 3.3 and later will put the
> launcher on your PATH. The launcher is compatible with all available
> versions of Python, so it does not matter which version is installed. To
> check that the launcher is available, execute the following command in
> Command Prompt:", but:-
> 
> C:\Users\Mark\Documents\MyPython>py -3.4
> 'py' is not recognized as an internal or external command,
> operable program or batch file.
> 
> Further running ftype shows nothing for Python, assoc just gives this
> .pyproj=VisualStudio.Launcher.pyproj.14.0.  Surely this is wrong?
> 
> Before I go to the bug tracker to raise an issue could somebody please
> confirm what I'm seeing, thanks.
> 

Well I've just installed 64-bit 3.5.0rc4 via the web installer (ie this:
https://www.python.org/ftp/python/3.5.0/python-3.5.0rc4-amd64-webinstall.exe)
onto a machine with 64-bit 3.4.2 already installed. I went for the
default install.

It all seems to be ok and py -3.4 --version gives  me "Python 3.4.2" as
expected. assoc/ftype both look ok. c:\windows\py.exe has the versions &
dates I expect.

TJG