[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Tim Golden]

Tim Golden added the comment:

[Housekeeping] Closing this as fixed. The mimetypes fix is in; the 3.4 
installer is well out of support. If any other issues arise on current 
installers they should be raised as new issues.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Chris Brennan]

Chris Brennan added the comment:

This bug appears (for me) when I use longer install paths, both in the GUI 
installer and doing a silent install via msiexec. The paths I've used so far 
are these:

E:\langs\Python\x32\27
E:\langs\Python\x32\34
E:\langs\Python\x64\27
E:\langs\Python\x64\34

E:\Python\x32\27
E:\Python\x32\34
E:\Python\x64\27
E:\Python\x64\34

Both of these paths fail to install when pip is called. If I install to a 
single-level directory, the install works fine (doesn't matter what drive I use 
either)

--
nosy: +Chris Brennan
versions: +Python 2.7

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Roundup Robot]

Roundup Robot added the comment:

New changeset bf2016a1911f by Steve Dower in branch '3.4':
Issue #22028: Ensure mimetypes will not open registry keys with embedded nulls
https://hg.python.org/cpython/rev/bf2016a1911f

New changeset 6ccade563bf7 by Steve Dower in branch 'default':
Issue #22028: Ensure mimetypes will not open registry keys with embedded nulls
https://hg.python.org/cpython/rev/6ccade563bf7

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Roundup Robot]

Roundup Robot added the comment:

New changeset 7c4c4e43c452 by Steve Dower in branch '2.7':
Issue #22028: Ensure mimetypes will not open registry keys with embedded nulls
https://hg.python.org/cpython/rev/7c4c4e43c452

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Tim Golden]

Tim Golden added the comment:

This has come up again in issue23604. Steve, please apply your patch. I think 
it should go against 2.7, 3.4  3.5 especially since all those versions now 
ship with ensurepip.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Piotr Dobrogost]

Changes by Piotr Dobrogost p...@bugs.python.dobrogost.net:


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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Tim Golden]

Changes by Tim Golden m...@timgolden.me.uk:


--
assignee:  - tim.golden

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Tim Golden]

Tim Golden added the comment:

This has just come up again over on python-list:

https://mail.python.org/pipermail/python-list/2015-January/696660.html

I'm the nearest thing we have to a mimetypes maintainer at least for Windows so 
I'll try to pick Steve's patch up.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Martin v . Löwis]

Martin v. Löwis added the comment:

I don't think the installer needs fixing beyond fixing mimetypes. If ensurepip 
fails, the whole installation ought to fail (IMO); that's the way MSI is 
supposed to work. It's the same if some other component could not be installed 
for some reason (permissions, out of disk space, etc): the entire installation 
gets rolled back. So I disagree with Steve that it would be desirable to let 
pip installation fail silently.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[venza]

venza added the comment:

This is the exception that comes out after running the py -m ensurepip manually:



C:\Python34\lib\ensurepip\__main__.py run on 08/07/14 15:44:36
Ignoring indexes: https://pypi.python.org/simple/
Downloading/unpacking setuptools
Cleaning up...
  Removing temporary dir C:\Users\venza\AppData\Local\Temp\pip_build_venza...
Exception:
Traceback (most recent call last):
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\basecommand.py,
 line 122, in main
status = self.run(options, args)
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\commands\install.py,
 line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, 
bundle=self.bundle)
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\req.py,
 line 1177, in prepare_files
url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\index.py,
 line 209, in find_requirement
file_locations, url_locations = self._sort_locations(locations)
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\index.py,
 line 128, in _sort_locations
sort_path(os.path.join(path, item))
  File 
C:\Users\venza\AppData\Local\Temp\tmpz0stj2e6\pip-1.5.6-py2.py3-none-any.whl\pip\index.py,
 line 109, in sort_path
if mimetypes.guess_type(url, strict=False)[0] == 'text/html':
  File C:\Python34\lib\mimetypes.py, line 287, in guess_type
init()
  File C:\Python34\lib\mimetypes.py, line 348, in init
db.read_windows_registry()
  File C:\Python34\lib\mimetypes.py, line 255, in read_windows_registry
with _winreg.OpenKey(hkcr, subkeyname) as subkey:
TypeError: OpenKey() argument 2 must be str without null characters or None, 
not str

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Steve Dower]

Steve Dower added the comment:

Presumably the value for subkeyname being passed to OpenKey contains an 
embedded null, which I believe is legal for the registry in general, but 
doesn't make much sense in this context and is quite possibly a corruption 
issue on your machine.

We can certainly strengthen mimetypes against this error (I don't know who's 
maintaining this module, but handling the TypeError on OpenKey seems safe 
enough) and you may also want to ensure your virus/malware scanners are up to 
date - embedded nulls in registry keys are often used to trigger bugs or hide 
malicious data.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Steve Dower]

Steve Dower added the comment:

FWIW, on my machine I don't have embedded nulls in any of the values that 
enum_keys is looking for:

 import winreg
 hkcr=winreg.OpenKey(winreg.HKEY_CLASSES_ROOT, '')
 n = []
 i = 0
 while True:
...   try:
... n.append(winreg.EnumKey(hkcr, i))
...   except EnvironmentError:
... break
...   i += 1
...
 [x for x in n if '\0' in x]
[]


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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[venza]

venza added the comment:

Ok, I had three such keys. I run RegDelNull.exe and managed to remove two of 
them. The third one is still there.
I'm reasonably sure that this machine is clean, anyway:

1. the Python installer should not fail silently when an exception is thrown 
during pip installation. There is also a stackoverflow question about where is 
pip in python 3.4, I can't find it! from someone likely having the same 
problem.

2. ensurepip should not crash on unrelated registry entries it doesn't like, it 
should just ignore them.

Thanks for the pointer to null keys and the script to find them.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Steve Dower]

Steve Dower added the comment:

Agreed on both points, but we need to find someone willing to fix the 3.4 
installer (I'm completely focused on the 3.5 installer, which won't suffer from 
the first point).

There's a separate issue tracker for pip which would be the place to get their 
developers to handle the exception in their code. We should be fixing mimetypes.

I've attached a proposed patch for mimetypes for 3.4 and default. Any 
concerns/do we know who owns it?

--
keywords: +patch
Added file: http://bugs.python.org/file36300/22028.diff

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Mark Lawrence]

Mark Lawrence added the comment:

Nobody is listed as a maintainer for mimetypes here 
https://docs.python.org/devguide/experts.html but I've seen Tim has done some 
work on it so adding him to nosy list.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Ned Deily]

Changes by Ned Deily n...@acm.org:


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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Donald Stufft]

Changes by Donald Stufft don...@stufft.io:


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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Steve Dower]

Steve Dower added the comment:

You can always deselect pip from the installation. Running it separately after 
installation will no doubt show what the actual problem is.

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[issue22028] Python 3.4.1 Installer ended prematurely (Windows msi)

[Jim Conyngham]

New submission from Jim Conyngham:

Python will not install on my Windows 7 (64-bit) OS.

I have repeatedly tried the install with variations (specifying an install 
directly vs. taking the default; running as admininstrator vs. not; with and 
without logging) and with multiple downloads python-3.4.1.msi, 
python-3.4.1.amd64.msi, and python-3.4.0.amd64.msi.  No matter what, it always 
fails with the same symptoms.

msiexec log file is attached.  There are a number of errors indicated on the 
log, but the one that's fatal seems to be this one:

MSI (s) (24:8C) [14:46:34:848]: Executing op: 
CustomActionSchedule(Action=UpdatePip,ActionType=3090,Source=F:\Shared.W7\Python34\python.exe,Target=-m
 ensurepip -U --default-pip,)
CustomAction UpdatePip returned actual error code 3 (note this may not be 100% 
accurate if translation happened inside sandbox)
MSI (s) (24:8C) [14:46:34:957]: Note: 1: 1722 2: UpdatePip 3: 
F:\Shared.W7\Python34\python.exe 4: -m ensurepip -U --default-pip 
MSI (s) (24:8C) [14:46:34:957]: Note: 1: 2262 2: Error 3: -2147287038 
Error 1722. There is a problem with this Windows Installer package. A program 
run as part of the setup did not finish as expected. Contact your support 
personnel or package vendor.  Action UpdatePip, location: 
F:\Shared.W7\Python34\python.exe, command: -m ensurepip -U --default-pip 
MSI (s) (24:8C) [14:46:41:292]: Note: 1: 2262 2: Error 3: -2147287038 
MSI (s) (24:8C) [14:46:41:292]: Product: Python 3.4.1 -- Error 1722. There is a 
problem with this Windows Installer package. A program run as part of the setup 
did not finish as expected. Contact your support personnel or package vendor.  
Action UpdatePip, location: F:\Shared.W7\Python34\python.exe, command: -m 
ensurepip -U --default-pip 

Action ended 14:46:41: InstallFinalize. Return value 3.

The same text, There is a problem with this Windows Installer package. A 
program run as part of the setup did not finish as expected. Contact your 
support personnel or package vendor. appears in a message box at the point of 
failure.

--
components: Installation
files: python.log
messages: 223621
nosy: DieInSente
priority: normal
severity: normal
status: open
title: Python 3.4.1 Installer ended prematurely (Windows msi)
type: crash
versions: Python 3.4
Added file: http://bugs.python.org/file36020/python.log

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