package python-gtk2-dev 2.24.0-5.1ubuntu2 failed to install/upgrade: installed python-gtk2-dev package post-installation script subprocess returned error exit status 1

[Sommerfeld]

error by update

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: python-gtk2-dev 2.24.0-5.1ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
Uname: Linux 4.15.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
AptOrdering:
 gnome-desktop3-data:amd64: Install
 libgnome-desktop-3-17:amd64: Install
 gir1.2-gnomedesktop-3.0:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Tue Dec 18 14:33:12 2018
ErrorMessage: installed python-gtk2-dev package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2015-08-09 (1226 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python3.6, Python 3.6.7, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.1
 apt 1.6.6
SourcePackage: pygtk
Title: package python-gtk2-dev 2.24.0-5.1ubuntu2 failed to install/upgrade: installed python-gtk2-dev package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2018-08-19 (121 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

The issue is in python-defaults, maybe on systemd where the default python was changed

Setting up python-gtk2-dev (2.24.0-5.1ubuntu2) ...
  File "/usr/bin/pyversions", line 20
    except IOError, msg:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.