[issue33922] Enforce 64bit Python by Launcher

[Robert]

Robert  added the comment:

I extended the documentation and created a pullrequest:

https://github.com/python/cpython/pull/7849

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[issue33922] Enforce 64bit Python by Launcher

[Robert]

Change by Robert :


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pull_requests: +7459

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[issue33922] Enforce 64bit Python by Launcher

[Robert]

Robert  added the comment:

A thanks!

In the meantime I found the corresponding changelog entry:
https://bugs.python.org/issue30291

I checked the corresponding commit:

there is no documentation update. It would be nice if the new feature can be 
found in the documentation (including the fact that -64 is only supported after 
installing python 3.7 or newer)...

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[issue33922] Enforce 64bit Python by Launcher

[Eryk Sun]

Eryk Sun  added the comment:

Limiting to 64-bit is already implemented in the latest version of the 
launcher. For example, below I've renamed the registry key for 64-bit Python 
3.5 to "xxx3.5" to prevent the launcher from finding it:

C:\>py -3.5-64
Python 3.5-64 not found!
Installed Pythons found by py Launcher for Windows
 -xxx-64
 -3.7-64 *
 -3.7-32
 -3.6-64
 -3.6-32
 -3.5-32
 -2.7-64
 -2.7-32

Requested Python version (3.5-64) not installed, use -0 for available 
pythons

-0p also lists the path for each executable. It's a bit rough around the edges 
that it lists the available versions and then tells the user to list them via 
-0 instead of the more general advice to use -h or --help for available 
options. 

The long names for -0 and -0p are --list and --list-paths, but currently these 
do not work. That should be easy to fix in the launcher's process() function if 
you want to contribute a patch.

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nosy: +eryksun
resolution:  -> duplicate
stage:  -> resolved
status: open -> closed
superseder:  -> Allow windows launcher to specify bit lengths with & without 
minor version

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[issue33922] Enforce 64bit Python by Launcher

[Robert]

New submission from Robert :

When using the Python Launcher "py.exe", it uses 64bit by default and I can 
enforce using 32bit. 

But there is no way to enforce 64bit. If I run "py -3.6" the actual called 
interpreter depends on the interpreter versions installed on my system. 

Thus "py -3.6-64" is missing. 
This is important if 64bit features are required.

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components: Windows
messages: 320127
nosy: mrh1997, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Enforce 64bit Python by Launcher
type: enhancement

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