[Bug 1910132] Re: package python3 3.8.2-0ubuntu2 failed to install/upgrade: installed python3 package pre-removal script subprocess returned error exit status 127

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.

Ubuntu tools are designed to work with the default python3 that comes
with the system (3.8 for focal/20.04), I don't see what you're
describing as an issue with a bug, but instead read it as a user needing
support.

I believe a Support site would be more appropriate, eg.
https://answers.launchpad.net/ubuntu . You can also find help with your
problem in the support forum of your local Ubuntu community
http://loco.ubuntu.com/ or asking at https://askubuntu.com or
https://ubuntuforums.org , or for more support options please look at
https://discourse.ubuntu.com/t/community-support/709

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https://bugs.launchpad.net/bugs/1910132

Title:
  package python3 3.8.2-0ubuntu2 failed to install/upgrade: installed
  python3 package pre-removal script subprocess returned error exit
  status 127

Status in python3-defaults package in Ubuntu:
  New

Bug description:
  I had python 3.8 and wanted to downgrade it to 3.7, so I purge removed
  python3.8 and tried to install python3.7 clean

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: python3 3.8.2-0ubuntu2
  ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
  Uname: Linux 5.4.0-58-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Mon Jan  4 19:01:37 2021
  ErrorMessage: installed python3 package pre-removal script subprocess returned error exit status 127
  InstallationDate: Installed on 2020-10-29 (66 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.2
  SourcePackage: python3-defaults
  Title: package python3 3.8.2-0ubuntu2 failed to install/upgrade: installed python3 package pre-removal script subprocess returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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