Windows Store app install registry keys have incorrect paths

[HuguesValois]

BPO	36649
Nosy	@pfmoore, @tjguk, @zware, @zooba, @miss-islington
PRs	bpo-36649: Remove trailing spaces for registry keys when installed via the Store #12865 [3.7] bpo-36649: Remove trailing spaces for registry keys when installed via the Store (GH-12865) #12867

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/zooba'
closed_at = <Date 2019-04-18.15:39:11.906>
created_at = <Date 2019-04-17.18:30:48.336>
labels = ['type-bug', 'expert-installation', '3.9', '3.8', '3.7', 'OS-windows']
title = 'Windows Store app install registry keys have incorrect paths'
updated_at = <Date 2019-04-18.15:39:11.905>
user = 'https://bugs.python.org/HuguesValois'

bugs.python.org fields:

activity = <Date 2019-04-18.15:39:11.905>
actor = 'steve.dower'
assignee = 'steve.dower'
closed = True
closed_date = <Date 2019-04-18.15:39:11.906>
closer = 'steve.dower'
components = ['Installation', 'Windows']
creation = <Date 2019-04-17.18:30:48.336>
creator = 'Hugues Valois'
dependencies = []
files = []
hgrepos = []
issue_num = 36649
keywords = ['patch']
message_count = 6.0
messages = ['340426', '340427', '340435', '340441', '340449', '340450']
nosy_count = 6.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'steve.dower', 'miss-islington', 'Hugues Valois']
pr_nums = ['12865', '12867']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue36649'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']

[HuguesValois]

When reading registry values under HKCU\SOFTWARE\Python\PythonCore\3.7 that were written by the Windows Store app install, all file and folder paths are incorrect.

Notice the extra [ ] as well as the missing backslash before python.exe and pythonw.exe

Paths read from registry are:

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0[                    ]

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0python.exe[                    ]

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0pythonw.exe[                    ]

Paths on disk are:

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0\python.exe

C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1008.0_x64__qbz5n2kfra8p0\pythonw.exe

[zooba]

Can you get me the *exact* Windows version number you're using?

I added those to work around a bug where keys were being incorrectly trimmed, and that format seemed to evaluate to nothing correctly, but perhaps that bug has been fixed in the OS?

[HuguesValois]

C:\Users\huvalo>ver

Microsoft Windows [Version 10.0.17763.437]

[zooba]

Great, thanks.

I have a fix in PR, but I'm going to do a "real" build to check. My machine is running a beta build, unfortunately, so I can't validate it against the older version. Might ping you for some help with that.