you are trying to install kivy-examples, which is not available in the archive. maybe a ppa package built for another distro/release?
18.04 LTS has python-kivy-examples ** Changed in: python3-defaults (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to python3-defaults in Ubuntu. https://bugs.launchpad.net/bugs/1340377 Title: package python3 3.2.3-0ubuntu1.2 failed to install/upgrade: subprocesso script post-installation instalado retornou erro do status de saída 4 Status in python3-defaults package in Ubuntu: Invalid Bug description: I'm trying to install kivy python3 but i don't know what i do for getting some strange error. Please let me know how i can help you to give more information about my problems. Many thanks, Jonathan Fontes. ProblemType: Package DistroRelease: Ubuntu 12.04 Package: python3 3.2.3-0ubuntu1.2 ProcVersionSignature: Ubuntu 3.11.0-24.42~precise1-generic 3.11.10.11 Uname: Linux 3.11.0-24-generic i686 ApportVersion: 2.0.1-0ubuntu17.6 Architecture: i386 Date: Thu Jul 10 20:51:14 2014 DuplicateSignature: package:python3:3.2.3-0ubuntu1.2:subprocesso script post-installation instalado retornou erro do status de saída 4 ErrorMessage: subprocesso script post-installation instalado retornou erro do status de saída 4 InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204) MarkForUpload: True SourcePackage: python3-defaults Title: package python3 3.2.3-0ubuntu1.2 failed to install/upgrade: subprocesso script post-installation instalado retornou erro do status de saída 4 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/1340377/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp