Debian Bug report logs - #754248
python-virtualenv: “ValueError: zero length field name in format” when creating virtualenv

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: John Kristensen <john@jerrykan.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Wed, 09 Jul 2014 15:35:29 +1000

Package: python-virtualenv
Version: 1.11.6-2
Severity: important

Dear Maintainer,

Attempting to create a python2.6 virtualenv using the following command:

  virtualenv -p python2.6 venv

Results in the follow error:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2378, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 830, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 1016, in
create_environment
    '/usr/share/python-wheels/{}-*.whl'.format(project))
ValueError: zero length field name in format

It seems to be due to the use of '{}' for string substitution which is not
compatible with python2.6.



-- System Information:
Debian Release: jessie/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable'), (460, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.14-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages python-virtualenv depends on:
ii  python                 2.7.6-2
ii  python-pip-whl         1.5.6-2
ii  python-pkg-resources   5.3-1
ii  python-setuptools-whl  5.3-1

Versions of packages python-virtualenv recommends:
ii  virtualenv  1.11.6-2

python-virtualenv suggests no packages.

-- no debconf information

Message #10 received at 754248@bugs.debian.org (full text, mbox, reply):

From: jb <jacekfoo@gmail.com>

To: 754248@bugs.debian.org

Subject: Just a note

Date: Thu, 17 Jul 2014 21:15:07 +0200

[Message part 1 (text/plain, inline)]

This affects me too. Regrettably some of us still need to use and develop
systems based on legacy python versions, having virtualenv working with old
python versions is important.

Problem might be related to the fact that virtualenv command now uses
python3 by default.

which virtualenv
/usr/bin/virtualenv

cat /usr/bin/virtualenv
#! /usr/bin/python3
# EASY-INSTALL-ENTRY-SCRIPT:
'virtualenv==1.11.6','console_scripts','virtualenv'
__requires__ = 'virtualenv==1.11.6'
import sys
from pkg_resources import load_entry_point

if __name__ == '__main__':
    sys.exit(
        load_entry_point('virtualenv==1.11.6', 'console_scripts',
'virtualenv')()
    )

JB

[Message part 2 (text/html, inline)]

Message #15 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Scott Kitterman <debian@kitterman.com>

To: jb <jacekfoo@gmail.com>

Cc: 754248@bugs.debian.org

Subject: Re: Just a note

Date: Thu, 17 Jul 2014 15:23:52 -0400

[Message part 1 (text/plain, inline)]

On Thursday, July 17, 2014 21:15:07 jb wrote:
> This affects me too. Regrettably some of us still need to use and develop
> systems based on legacy python versions, having virtualenv working with old
> python versions is important.

But unrelated to if virtualenv is using python or python3 as it's runtime.  It 
still support python virtual environments (modulo bugs such as this one).

Scott K

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Message #20 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Renat Sabitov <r.sabitov@gmail.com>

To: 754248@bugs.debian.org

Subject: Re: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Wed, 6 Aug 2014 22:27:47 +1000

[Message part 1 (text/plain, inline)]

Dear Maintainer,

I tried to replace {} with % operator and now I'm having following errors:

New python executable in py26/bin/python2.6
Also creating executable in py26/bin/python
Installing setuptools, pip...
  Complete output from command /home/rsabitov/work/...x/py26/bin/python2.6
-c "import sys, pip; sys...d\"] + sys.argv[1:]))" s
etuptools pip:
  Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File
"/usr/share/python-wheels/pip-1.5.6-py2.py3-none-any.whl/pip/__init__.py",
line 61, in <module>
  File
"/usr/share/python-wheels/pip-1.5.6-py2.py3-none-any.whl/pip/vcs/mercurial.py",
line 9, in <module>
  File
"/usr/share/python-wheels/pip-1.5.6-py2.py3-none-any.whl/pip/download.py",
line 22, in <module>
  File
"/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/lib/python-wheels/requests-2.3.0-py2.py3-none-any.whl/requests/
__init__.py", line 58, in <module>
  File
"/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/lib/python-wheels/requests-2.3.0-py2.py3-none-any.whl/requests/
utils.py", line 25, in <module>
  File
"/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/lib/python-wheels/requests-2.3.0-py2.py3-none-any.whl/requests/
compat.py", line 92, in <module>
  File
"/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/lib/python-wheels/urllib3-1.8.3-py2.py3-none-any.whl/urllib3/__
init__.py", line 16, in <module>
  File
"/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/lib/python-wheels/urllib3-1.8.3-py2.py3-none-any.whl/urllib3/co
nnectionpool.py", line 33, in <module>
ImportError: cannot import name CertificateError
----------------------------------------
...Installing setuptools, pip...done.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2378, in
<module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 830, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 1032, in
create_environment
    install_wheel(to_install, py_executable, search_dirs)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 975, in
install_wheel
    'PIP_NO_INDEX': '1'
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 917, in
call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /home/rsabitov/work/...x/py26/bin/python2.6 -c "import
sys, pip; sys...d\"] + sys.argv[1:]))" setuptools pip failed with error
code 1
Running virtualenv with interpreter /usr/bin/python2.6

ERROR: InvocationError: /usr/bin/python3 -mvirtualenv --setuptools --python
/usr/bin/python2.6 py26 (see
/home/rsabitov/work/phoenix/ums/tests/system/.tox/py26/log/py26-0.log)

The problem is that virtualenv install wheels from python3 and among them a
recent version of urllib3. It in turn requires
a recent ssl package with CertificateError. python2.6-minimal package has
an old version without required class.


-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.14-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) (ignored:
LC_ALL set to en_AU.UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages python3-virtualenv depends on:
ii  python-pip-whl         1.5.6-2
ii  python-setuptools-whl  5.4.1-1
ii  python3                3.4.1-1
ii  python3-pkg-resources  5.4.1-1
pn  python3:any            <none>

python3-virtualenv recommends no packages.

python3-virtualenv suggests no packages.

-- no debconf information

[Message part 2 (text/html, inline)]

Message #25 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Stefano Rivera <stefanor@debian.org>

To: Renat Sabitov <r.sabitov@gmail.com>, 754248@bugs.debian.org

Subject: Re: Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Tue, 18 Nov 2014 13:17:06 -0800

Hi Renat (2014.08.06_05:27:47_-0700)
> I tried to replace {} with % operator and now I'm having following errors:

> ImportError: cannot import name CertificateError

That is being tracked in #755106 and #763389, and I intend to fix it
soon.

SR

-- 
Stefano Rivera
  http://tumbleweed.org.za/
  H: +27 21 461 1230 C: +27 72 419 8559

Message #30 received at 754248@bugs.debian.org (full text, mbox, reply):

From: John Kristensen <john@jerrykan.com>

To: 754248@bugs.debian.org

Cc: Stefano Rivera <stefanor@debian.org>

Subject: Re: Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Thu, 08 Jan 2015 14:24:06 +1100

[Message part 1 (text/plain, inline)]

On 19/11/14 08:17, Stefano Rivera wrote:
> Hi Renat (2014.08.06_05:27:47_-0700)
>> I tried to replace {} with % operator and now I'm having following errors:
> 
>> ImportError: cannot import name CertificateError
> 
> That is being tracked in #755106 and #763389, and I intend to fix it
> soon.
> 
> SR
> 

With #755106 and #763389 resolved the attached patch now fixes this
issue for me.

[754248.patch (text/x-patch, attachment)]

Message #35 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Stefano Rivera <stefanor@debian.org>

To: John Kristensen <john@jerrykan.com>

Cc: 754248@bugs.debian.org

Subject: Re: Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Thu, 8 Jan 2015 06:08:34 +0200

[Message part 1 (text/plain, inline)]

Hi John (2015.01.08_05:24:06_+0200)
> ++            '/usr/share/python-wheels/{0}-*.whl'.format(project))
> -+            '/usr/share/python-wheels/{}-*.whl'.format(project))

That's simple enough that it is reasonable to apply. However we've
probably missed the boat for Debian Jessie.

SR

-- 
Stefano Rivera
  http://tumbleweed.org.za/
  +1 415 683 3272

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Message #42 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Arthur de Jong <arthur@arthurdejong.org>

To: Stefano Rivera <stefanor@debian.org>, 754248@bugs.debian.org

Subject: Re: Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Sun, 13 Nov 2016 22:14:21 +0100

[Message part 1 (text/plain, inline)]

On Thu, 2015-01-08 at 06:08 +0200, Stefano Rivera wrote:
> Hi John (2015.01.08_05:24:06_+0200)
> > ++            '/usr/share/python-wheels/{0}-*.whl'.format(project))
> > -+            '/usr/share/python-wheels/{}-*.whl'.format(project))
> 
> That's simple enough that it is reasonable to apply. However we've
> probably missed the boat for Debian Jessie.

I just ran into this today and I can confirm that the above fix allows
me to move forward with a Python 2.6 virtualenv. Can you fix this for
unstable?

I know Python 2.6 is no longer supported within Debian but I want to
run some tests with a locally-compiled Python 2.6 to ensure that my
code still works with that if needed.

Thanks,

-- 
-- arthur - arthur@arthurdejong.org - https://arthurdejong.org/ --

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Message #47 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Barry Warsaw <barry@debian.org>

To: Arthur de Jong <arthur@arthurdejong.org>

Cc: 754248@bugs.debian.org, Stefano Rivera <stefanor@debian.org>

Subject: Re: [Python-modules-team] Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Mon, 14 Nov 2016 10:28:23 -0500

[Message part 1 (text/plain, inline)]

On Nov 13, 2016, at 10:14 PM, Arthur de Jong wrote:

>I just ran into this today and I can confirm that the above fix allows
>me to move forward with a Python 2.6 virtualenv. Can you fix this for
>unstable?

Yes, I'll upload this fix to unstable momentarily.

[Message part 2 (application/pgp-signature, inline)]

Message #52 received at 754248-close@bugs.debian.org (full text, mbox, reply):

From: Barry Warsaw <barry@debian.org>

To: 754248-close@bugs.debian.org

Subject: Bug#754248: fixed in python-virtualenv 15.0.3+ds-3

Date: Mon, 14 Nov 2016 16:19:10 +0000

Source: python-virtualenv
Source-Version: 15.0.3+ds-3

We believe that the bug you reported is fixed in the latest version of
python-virtualenv, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 754248@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Barry Warsaw <barry@debian.org> (supplier of updated python-virtualenv package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Mon, 14 Nov 2016 10:55:04 -0500
Source: python-virtualenv
Binary: python-virtualenv python3-virtualenv virtualenv
Architecture: source all
Version: 15.0.3+ds-3
Distribution: unstable
Urgency: medium
Maintainer: Barry Warsaw <barry@debian.org>
Changed-By: Barry Warsaw <barry@debian.org>
Description:
 python-virtualenv - Python virtual environment creator
 python3-virtualenv - Python virtual environment creator
 virtualenv - Python virtual environment creator
Closes: 754248
Changes:
 python-virtualenv (15.0.3+ds-3) unstable; urgency=medium
 .
   * d/patches/use-wheels.patch: Use a Python 2.6-friendly format string.
     (Closes: #754248)
Checksums-Sha1:
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Message #57 received at 754248@bugs.debian.org (full text, mbox, reply):

From: Arthur de Jong <arthur@arthurdejong.org>

To: Barry Warsaw <barry@debian.org>

Cc: 754248@bugs.debian.org, Stefano Rivera <stefanor@debian.org>

Subject: Re: [Python-modules-team] Bug#754248: python-virtualenv: Error when attempting to create a python2.6 virtualenv

Date: Mon, 14 Nov 2016 23:45:46 +0100

[Message part 1 (text/plain, inline)]

On Mon, 2016-11-14 at 10:28 -0500, Barry Warsaw wrote:
> On Nov 13, 2016, at 10:14 PM, Arthur de Jong wrote:
> > I just ran into this today and I can confirm that the above fix
> > allows me to move forward with a Python 2.6 virtualenv. Can you fix
> > this for unstable?
> 
> Yes, I'll upload this fix to unstable momentarily.

Thanks.

Just managed to get everything working with the python2.6 from wheezy :)

-- 
-- arthur - arthur@arthurdejong.org - https://arthurdejong.org/ --

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