Hi, in your description you say Python 3.5 is your default Python. Does that mean you changed what /usr/bin/python points to? If so, that is not a supported configuration on Ubuntu and it's not surprising that the installation failed. You should use /usr/bin/python3 for all your Python 3 needs.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to six in Ubuntu. https://bugs.launchpad.net/bugs/1613880 Title: package python-six 1.10.0-3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 Status in six package in Ubuntu: New Bug description: attempting "sudo apt-get install python-matplotlib" with Python 3.5 as my default Python version ProblemType: Package DistroRelease: Ubuntu 16.04 Package: python-six 1.10.0-3 ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15 Uname: Linux 4.4.0-34-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Tue Aug 16 15:47:58 2016 Dependencies: ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2016-08-08 (8 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.12~ubuntu16.04.1 SourcePackage: six Title: package python-six 1.10.0-3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/six/+bug/1613880/+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