[Bug 1833415] [NEW] Version.sha256 throws SystemError

[Gerard Weatherby]

Public bug reported:

Attempting to access the property raised the exception 'SystemError: error return without exception set'
The error occurs when version._records.hashes.file_size == 0.
The package occurred on (cups=2.2.7-1ubuntu2.5) on an Ubnuntu 18.04.2 LTS system ; attempting to download the source *deb file failed.

Doing an apt-get clean / apt-get update / apt upgrade seemed to make the
problem go away.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: python3-apt 1.6.4
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Jun 19 08:20:32 2019
InstallationDate: Installed on 2019-06-05 (13 days ago)
InstallationMedia:
 
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: python-apt
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: python-apt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic

** Attachment added: "Screenshot showing object state in PyCharm debugger"
   https://bugs.launchpad.net/bugs/1833415/+attachment/5271571/+files/badhash.png

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https://bugs.launchpad.net/bugs/1833415

Title:
  Version.sha256 throws SystemError

Status in python-apt package in Ubuntu:
  New

Bug description:
  Attempting to access the property raised the exception 'SystemError: error return without exception set'
  The error occurs when version._records.hashes.file_size == 0.
  The package occurred on (cups=2.2.7-1ubuntu2.5) on an Ubnuntu 18.04.2 LTS system ; attempting to download the source *deb file failed.

  Doing an apt-get clean / apt-get update / apt upgrade seemed to make
  the problem go away.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: python3-apt 1.6.4
  ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
  Uname: Linux 4.15.0-43-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Wed Jun 19 08:20:32 2019
  InstallationDate: Installed on 2019-06-05 (13 days ago)
  InstallationMedia:
   
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: python-apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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