Bug#1108035: python3-apt: Accept os.PathLike

Package: python3-apt
Version: 3.0.0
Severity: wishlist

Nowadays most Python libraries tend to accept objects implementing the 
os.PathLike abstract base class where they accept file names.  The 
apt_pkg functions that go through PyApt_Filename don't seem to.  Here's 
a contrived example:

  >>> from pathlib import Path
  >>> import apt_pkg
  >>> release_path = Path("/var/lib/apt/lists/deb.debian.org_debian_dists_trixie_InRelease")
  >>> apt_pkg.open_maybe_clear_signed_file(release_path)
  Traceback (most recent call last):
    File "<python-input-4>", line 1, in <module>
      apt_pkg.open_maybe_clear_signed_file(release_path)
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
  SystemError: argument 1 (unspecified)
  >>> apt_pkg.open_maybe_clear_signed_file(release_path.as_posix())
  6

It would be nice if this worked.

Thanks,

-- 
Colin Watson (he/him)                              [[email protected]]

-- System Information:
Debian Release: 13.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.27-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages python3-apt depends on:
ii  distro-info-data   0.64
ii  libapt-pkg7.0      3.0.2
ii  libc6              2.41-8
ii  libgcc-s1          14.2.0-19
ii  libstdc++6         14.2.0-19
ii  python-apt-common  3.0.0
ii  python3            3.13.3-1

Versions of packages python3-apt recommends:
ii  iso-codes    4.18.0-1
ii  lsb-release  12.1-1

Versions of packages python3-apt suggests:
ii  apt             3.0.2
pn  python-apt-doc  <none>

-- no debconf information