[Bug 1048733] Re: add-apt-repository fails due to softwareproperties error

[Junlan Liu]

@Michael, that didn't work for me. The error showed up after I installed python3.5 from source.
$ wget http://python.org/ftp/python/3.5.2/Python-3.5.2.tar.xz
$ tar xpvf Python-3.5.2.tar.xz
$ cd Python-3.5.2
$ ./configure --prefix=/usr
$ make
$ make install

If I link python3 to python3.4, then it starts working again
$ sudo rm /usr/bin/python3
$ sudo ln -s /usr/bin/python3.4 /usr/bin/python3

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https://bugs.launchpad.net/bugs/1048733

Title:
  add-apt-repository fails due to softwareproperties error

Status in software-properties package in Ubuntu:
  Invalid

Bug description:
  $ sudo add-apt-repository ppa:lubuntu-dev/lubuntu-daily
  Traceback (most recent call last):
    File "/usr/bin/add-apt-repository", line 10, in <module>
      from softwareproperties.SoftwareProperties import SoftwareProperties
  ImportError: No module named softwareproperties.SoftwareProperties

  I tried other PPAs and had the same error so it seems to be universal.

  Interestingly trying to add manually in Settings → Repository just
  results in a notice saying that repos have changed and you need to
  reload. It doesn't actually get to the point where you add repos. That
  may be a related issue so I will file a separate bug and link here and
  vice versa.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: python-software-properties 0.92.1
  ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0
  Uname: Linux 3.4.0-5-generic i686
  ApportVersion: 2.1.1-0ubuntu2
  Architecture: i386
  Date: Mon Sep 10 10:15:50 2012
  InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Alpha i386 (20120215)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=screen
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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