SyntaxWarnings with Python3.12

[zdohnal]

Fedora 39 uses Python 3.12 by default, which generates many SyntaxWarnings when running hplip scripts.

Most warnings are due regular expressions in strings, so making them raw fixes the issue.

The patch is attached.

[Till Kamppeter (till-kamppeter)]

@zdohnal, thanks a lot for the patch, I have applied it now (with slight adjustments) to the Ubuntu package, fixing bug #2054869.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "Proposed patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[zdohnal (zdohnal)]

Till,

in case there is an issue within my patch which made you do the adjustments, would you mind sharing them here? Upstream can apply them later together with all changes.

[Till Kamppeter (till-kamppeter)]

This is the patch adapted to the actual Ubuntu/Debian package of HPLIP, as used in the hplip 3.23.12+dfsg0-0ubuntu2 release for Noble.

The adaptations were most probably needed because, before applying this patch ~80 other patches got applied to the original source code of HPLIP.

Especially the transition from "is not" to "!=" seems already done.

[Launchpad Janitor (janitor)]

This bug was fixed in the package hplip - 3.23.12+dfsg0-0ubuntu4

---------------
hplip (3.23.12+dfsg0-0ubuntu4) noble; urgency=medium

  * Fix FTBFS on armhf due to implicit functions

 -- Simon Chopin <email address hidden> Fri, 22 Mar 2024 15:40:13 +0100

[fprietog (fprietog)]

I'm sorry but the related fix seem to be not complete: during upgrade from 23.10.1 mantic to 24.04 noble it updates hplip-data 3.23.12+dfsg0-0ubuntu5 from previous 3.22.10+dfsg0-2ubuntu1 and it doesn't generate SyntaxWarnings... but a few moments later, then during python3 (3.12.3-0ubuntu1) configuration:

Configurando python3 (3.12.3-0ubuntu1) ...
running python rtupdate hooks for python3.12...
...
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
  re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
  re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
  re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
  http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)
...
running python post-rtupdate hooks for python3.12...

You can also reinstall hplip-data using apt and ending in the same problem:

# apt install --reinstall hplip-data
Leyendo lista de paquetes... Hecho
Creando árbol de dependencias... Hecho
Leyendo la información de estado... Hecho
0 actualizados, 0 nuevos se instalarán, 1 reinstalados, 0 para eliminar y 0 no actualizados.
Se necesita descargar 6.467 kB de archivos.
Se utilizarán 0 B de espacio de disco adicional después de esta operación.
Des:1 http://ports.ubuntu.com/ubuntu-ports noble/main arm64 hplip-data all 3.23.12+dfsg0-0ubuntu5 [6.467 kB]
Descargados 6.467 kB en 1s (8.035 kB/s)
(Leyendo la base de datos ... 221724 ficheros o directorios instalados actualmente.)
Preparando para desempaquetar .../hplip-data_3.23.12+dfsg0-0ubuntu5_all.deb ...
Desempaquetando hplip-data (3.23.12+dfsg0-0ubuntu5) sobre (3.23.12+dfsg0-0ubuntu5) ...
Configurando hplip-data (3.23.12+dfsg0-0ubuntu5) ...
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
  re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
  re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
  re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
  http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)

[Jeremy Bícha (jbicha)]

The patch from comment #8 has been updated and uploaded to oracular-proposed. I have unsubscribed ubuntu-sponsors. Please feel free to resubscribe if you have something else that needs to be sponsored.

[Launchpad Janitor (janitor)]

This bug was fixed in the package hplip - 3.24.4+dfsg0-0ubuntu3

---------------
hplip (3.24.4+dfsg0-0ubuntu3) oracular; urgency=low

  [ Nathan Pratta Teodosio ]
  * debian/patches/0089-correct-invalid-escapes.patch: Fixed further
    invalid escapes, upstream seems still not aware of the problem
    (LP: #2029480, LP: #2054869).

 -- Till Kamppeter <email address hidden> Wed, 14 Aug 2024 19:02:08 +0200

[Francisco Gonzalez (fgonza1971)]

Hello, I'm having same error but with another package reported in here but with packages bleachbit and rhythmbox because updating the packages today with Python 3.12.

https://ubuntuforums.org/showthread.php?t=2500273&p=14202717#post14202717

Regards

Fran

[JK (janne-kankaala)]

I confirm that this affects several packages. On my machine problems started 8/28.

---
running python rtupdate hooks for python3.12...
usr/share/bleachbit/bleachbit/Action.py:42: SyntaxWarning: invalid escape sequence '\['
  return re.search('[?*\[\]]', s) is not None
/usr/share/bleachbit/bleachbit/Cleaner.py:402: SyntaxWarning: invalid escape sequence '\W'
  '$LocalAppData\\Microsoft\\Windows\WER\\ReportQueue\\*\\*',
/usr/share/bleachbit/bleachbit/Cleaner.py:419: SyntaxWarning: invalid escape sequence '\F'
  '$windir\\Microsoft.NET\Framework\*\*.log',
/usr/share/bleachbit/bleachbit/Cleaner.py:432: SyntaxWarning: invalid escape sequence '\E'
  '$windir\\system32\\LogFiles\\WMI\\RTBackup\EtwRT.*etl',
/usr/share/bleachbit/bleachbit/Memory.py:67: SyntaxWarning: invalid escape sequence '\w'
  ret = re.search('^swapoff (\w* )?(/[\w/.-]+)$', swapoff)
/usr/share/bleachbit/bleachbit/Memory.py:159: SyntaxWarning: invalid escape sequence '\s'
  if not re.search('Filename\s+Type\s+Size', line):
/usr/share/bleachbit/bleachbit/Memory.py:162: SyntaxWarning: invalid escape sequence '\s'
  ret = re.search("%s\s+\w+\s+([0-9]+)\s" % device, line)
/usr/share/bleachbit/bleachbit/Unix.py:67: SyntaxWarning: invalid escape sequence '\.'
  """Adds a filter consisting of a prefix and a postfix
/usr/share/bleachbit/bleachbit/Unix.py:652: SyntaxWarning: invalid escape sequence '\.'
  paths = re.findall('/[/a-z\.\*]+', stdout)
/usr/share/bleachbit/bleachbit/Unix.py:720: SyntaxWarning: invalid escape sequence '\d'
  cregex = re.compile("Freed space: ([\d.]+[\s]+[BkMG])")
/usr/share/bleachbit/bleachbit/Windows.py:21: SyntaxWarning: invalid escape sequence '\S'
  """
/usr/share/bleachbit/bleachbit/Windows.py:141: SyntaxWarning: invalid escape sequence '\ '
  msg = _('The file python3.dll was found in c:\ or c:\dlls, which indicates a possible attempt at DLL search-order hijacking.')
/usr/share/bleachbit/bleachbit/Windows.py:157: SyntaxWarning: invalid escape sequence '\g'
  for fn in glob.glob(os.path.expandvars('%TEMP%\gdbus-nonce-file-*')):
/usr/lib/x86_64-linux-gnu/gedit/plugins/externaltools/library.py:212: SyntaxWarning: invalid escape sequence '\-'
  RE_KEY = re.compile('^([a-zA-Z_][a-zA-Z0-9_.\-]*)(\[([a-zA-Z_@]+)\])?$')
/usr/lib/x86_64-linux-gnu/gedit/plugins/snippets/substitutionparser.py:162: SyntaxWarning: invalid escape sequence '\s'
  match = re.match('\\\\?%s\s*' % self.REG_GROUP, tokens)
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
  re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
  re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
  re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
  http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)
/usr/lib/rhythmbox/plugins/alternative-toolbar/alttoolbar_plugins.py:171: SyntaxWarning: invalid escape sequence '\('
  translation = re.sub('\(..\)', '', translation, flags=...

[corrado venturini (corradoventu)]

also on libreoffice
Setting up python3-uno (4:24.8.0-0ubuntu1) ...
/usr/lib/libreoffice/program/officehelper.py:94: SyntaxWarning: invalid escape sequence '\P'
  """Bootstrap PyUNO Runtime.
Setting up libreoffice-calc (4:24.8.0-0ubuntu1) ...

[Christophe Diot (krostif25)]

after
sudo apt update && sudo apt upgrade
Atteint :1 http://fr.archive.ubuntu.com/ubuntu noble InRelease
Atteint :2 http://fr.archive.ubuntu.com/ubuntu noble-updates InRelease
Atteint :3 http://fr.archive.ubuntu.com/ubuntu noble-backports InRelease
Atteint :4 http://security.ubuntu.com/ubuntu noble-security InRelease
Atteint :5 https://dl.google.com/linux/chrome/deb stable InRelease
Atteint :6 https://ppa.launchpadcontent.net/tomtomtom/woeusb/ubuntu noble InRelease
Atteint :7 https://ppa.launchpadcontent.net/yannubuntu/boot-repair/ubuntu noble InRelease
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances... Fait
Lecture des informations d'état... Fait
Tous les paquets sont à jour.
Lecture des listes de paquets... Fait
Construction de l'arbre des dépendances... Fait
Lecture des informations d'état... Fait
Calcul de la mise à jour... Fait
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  libcjson1 libavdevice60 ffmpeg libpostproc57 libavcodec60 libavutil58
  libswscale7 libswresample4 libavformat60 libavfilter9
Learn more about Ubuntu Pro at https://ubuntu.com/pro
0 mis à jour, 0 nouvellement installés, 0 à enlever et 0 non mis à jour.
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Paramétrage de python3 (3.12.3-0ubuntu2) ...
running python rtupdate hooks for python3.12...
/usr/share/hplip/base/imagesize.py:186: SyntaxWarning: invalid escape sequence '\#'
  re.compile('\#define\s+\S+\s+\d+') : ('image/x-xbitmap', xbmsize),
/usr/share/hplip/base/imagesize.py:187: SyntaxWarning: invalid escape sequence '\/'
  re.compile('\/\* XPM \*\/') : ('image/x-xpixmap', xpmsize),
/usr/share/hplip/base/imagesize.py:189: SyntaxWarning: invalid escape sequence '\*'
  re.compile('^II\*\x00') : ('image/tiff', tiffsize),
/usr/share/hplip/fax/ledmfax.py:46: SyntaxWarning: invalid escape sequence '\d'
  http_result_pat = re.compile(b"""HTTP/\d.\d\s(\d+)""", re.I)
Traceback (most recent call last):
  File "/usr/bin/py3clean", line 210, in <module>
    main()
  File "/usr/bin/py3clean", line 196, in main
    pfiles = set(dpf.from_package(options.package))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/python3/debpython/files.py", line 55, in from_package
    raise Exception("cannot get content of %s" % package_name)
Exception: cannot get content of inkscape
error running python rtupdate hook inkscape
Traceback (most recent call last):
  File "/usr/bin/py3clean", line 210, in <module>
    main()
  File "/usr/bin/py3clean", line 196, in main
    pfiles = set(dpf.from_package(options.package))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^...

[Andrew Ziem (ahziem1)]

BleachBit 4.6.1 beta has fixed for the syntax warning

[Fantu (fantonifabio)]

BleachBit 4.6.0-4 fixed it and as bugfix only revision I think is acceptable for Ubuntu 24.10 now in feature freeze. There is an Ubuntu developer that want to sync it?

[Till Kamppeter (till-kamppeter)]

Done. Synced BleachBit 4.6.0-4 right now, thanks for investigating.