python-dev installation error ImportError No module named apt pkg

Question

I am Debian user  and I want to install python-dev  but when I run the code in the shell as a root     aptitude install python-dev   I get the following error   Traceback  most recent call last            File   usr bin apt-listchanges   line 28  in  lt module gt      import apt pkg ImportError  No module named apt pkg   What seems to be the problem and how can I resolve it

User · Answer

None of the answers worked for me  I am using Ubuntu 16 04 and Python 3 6   So I finally solved the issue as following   1- connect to the FTP of the server  2- go to the folder   usr lib python3 dist-packages    3- duplicate the file  apt pkg cpython-35m-x86 64-linux-gnu so   4- rename this duplicated file to  apt pkg cpython-36m-x86 64-linux-gnu so   That s it

User · Answer

Solve it by this    usr lib python3 dist-packages  cp apt pkg cpython-34m-i386-linux-gnu so apt pkg so  Or    usr lib python3 dist-packages  cp apt pkg cpython-35m-x86 64-linux-gnu so apt pkg so  Basically  if you get a No such file or directory just ls to try to get the right name

User · Answer

I met this problem when doing sudo apt-get update  My env is debian8  with python2 7   3 4 default    3 5   The following code will only re-create a apt pkg    so file for python 3 5  sudo apt-get install python3-apt --reinstall   The following code solved my problem   cd  usr lib python3 dist-packages sudo ln -s apt pkg cpython- 35m 34m -x86 64-linux-gnu so   So  obviously  python3-apt checks the highest python version  instead of the current python version in use

User · Answer

A last resort is sudo cp  usr lib python3 dist-packages apt pkg cpython-35m-x86 64-linux-gnu so  usr lib python3 dist-packages apt pkg cpython-36m-x86 64-linux-gnu so if the ln command is too much for you or somehow magically doesn t work   cp above can also be mv if you are only dedicated to using one Python version

User · Answer

if you re using python 3 7 downgrade it to python 3 6 by updating Alternatives  This worked for me  sudo update-alternatives --install  usr bin python3 python3  usr bin python3 6 1  sudo update-alternatives --config python3

User · Answer

Just in case it helps another  I finally solved this problem  that was apparently caused by python version conflicts  by redirecting the link python3  then redirecting it to the right python version   sudo rm  usr bin python3 sudo ln -s  usr bin python3 4   You may need to enter the correct python version  found with   python3 -V

User · Answer

This error will often occur when a newer version of python has been installed alongside an older version e g    Ubuntu 18 04 1 ships with python version 3 6 6  Installed ppa deadsnakes python3 7 1 or alternative Run a command that uses the apt pkg module and get an error such as       from CommandNotFound db db import SqliteDatabase File   usr lib python3 dist-packages CommandNotFound db db py   line 5  in  lt module gt      import apt pkg    When we install a non-distro python3 version with apt it will set a shared module directory to be that of python3 most usually it will be  usr lib python3    Most of the time this will be ok  but under some circumstances the different versions of python rely on different libraries or shared objects libraries than the other python version does  so as other answers have pointed out we need to link the  SO to the correct python version  So if we have python3 6 installed on a 64bit system then the apt pkg  SO link would be   sudo ln -s apt pkg cpython-36m-x86 64-linux-gnu so apt pkg so   But the problem lies in the fact that when we install a newer python version the link will update to point to the newest python version  which leads to the error of apt pkg module not being found  By checking which version of python ships with your distro you can create the link as shown above  Or we use a method to offer the command a choice of python versions to link the  SO such as   sudo ln -s apt pkg cpython- 36m 35m 34m -x86 64-linux-gnu so apt pkg so   Because python will create this link to the newest installed python version we give the command the option to choose from 3 python versions  of which it will choose the highest version given

User · Answer

Please try to fix this by setting the locale variables   export LC ALL  en US UTF-8   export LC CTYPE  en US UTF-8

User · Answer

Please review the following documentation  It will definitely solve the problem  http   www programmersought com article 55001874709

User · Answer

This worked for me on after updating python3 7 on ubuntu18 04  cd  usr lib python3 dist-packages sudo cp apt pkg cpython-36m-x86 64-linux-gnu so apt pkg so

User · Answer

Windows 10 WSL v1  Ubuntu 16 04 6 LTS   This reddit answer  slightly modified worked for me   sudo ln -sfn  usr lib python3 dist-packages apt pkg cpython-35m-x86 64-linux-gnu so apt pkg so

User · Answer

Check your default Python 3 version    python --version Python 3 7 5    cd into  usr lib python3 dist-packages and check the apt pkg   files  You will find that there is none for your default Python version    ll apt pkg   apt pkg cpython-36m-x86 64-linux-gnu so    Create the symlink    sudo ln -s apt pkg cpython-36m-x86 64-linux-gnu so apt pkg cpython-37m-x86 64- linux-gnu so

User · Answer

The solution of  user8178061 worked well but I did it with some modifications for my version wich is python3 7 with Ubuntu  I replaced the apt pkg cpython-3m-i386-linux-gnu so with apt pkg cpython-36m-x86 64-linux-gnu so  Here the two commands to execute   cd  usr lib python3 dist-packages  sudo cp apt pkg cpython-36m-x86 64-linux-gnu so apt pkg so

User · Answer

I m on Ubuntu 16 04  and upgraded to Python 3 7   Here is the error that I had when trying to add a PPA     sudo add-apt-repository ppa ubuntu-toolchain-r test                                            Traceback  most recent call last     File  quot  usr bin add-apt-repository quot   line 11  in  lt module gt      from softwareproperties SoftwareProperties import SoftwareProperties  shortcut handler   File  quot  usr lib python3 dist-packages softwareproperties SoftwareProperties py quot   line 27  in  lt module gt      import apt pkg ModuleNotFoundError  No module named  apt pkg   I was able to fix this error by making symbolic link with my initial python 3 4 apt pkg cpython-34m-x86 64-linux-gnu so  by creating the following symbolic link sudo ln -s apt pkg cpython-34m-x86 64-linux-gnu so apt pkg so

User · Answer

I see everyone saying how to fix it with strange copying etc  but no one really said why the problem occurs  So let me explain  for those of you who like me don t want to mess with system files only because someone on SO told them so   The problem is that   many system scripts have python3 shebang hardcoded into them  You can check it yourself      grep -R  quot      usr bin python3 quot   usr lib     usr lib cnf-update-db    usr bin python3  usr lib command-not-found    usr bin python3  usr lib cups filter pstotiff    usr bin python3  usr lib cups filter rastertosag-gdi    usr bin python3 -u grep   usr lib cups backend cups-brf  Permission denied  usr lib cups backend hpfax    usr bin python3  usr lib language-selector ls-dbus-backend    usr bin python3  usr lib python3 dist-packages language support pkgs py    usr bin python3  usr lib python3 dist-packages softwareproperties MirrorTest py    usr bin python3  usr lib python3 dist-packages cupshelpers installdriver py    usr bin python3  usr lib python3 dist-packages cupshelpers openprinting py    usr bin python3  usr lib python3 dist-packages cupshelpers xmldriverprefs py    usr bin python3  usr lib python3 dist-packages cupshelpers smburi py    usr bin python3  usr lib python3 dist-packages cupshelpers ppds py    usr bin python3  usr lib python3 dist-packages cupshelpers debug py    usr bin python3  usr lib python3 dist-packages DistUpgrade dist-upgrade py    usr bin python3  usr lib python3 dist-packages CommandNotFound db creator py    usr bin python3  usr lib python3 dist-packages CommandNotFound db db py    usr bin python3  usr lib python3 dist-packages Quirks quirkreader py    usr bin python3 grep   usr lib ssl private  Permission denied  usr lib system-service system-service-d    usr bin python3  usr lib ubuntu-release-upgrader check-new-release-gtk    usr bin python3  usr lib ubuntu-release-upgrader do-partial-upgrade    usr bin python3  usr lib ubuntu-release-upgrader check-new-release    usr bin python3  usr lib update-notifier package-data-downloader    usr bin python3  usr lib update-notifier backend helper py    usr bin python3  usr lib update-notifier apt check py    usr bin python3  usr lib update-notifier apt-check    usr bin python3    python apt package python-apt python3-apt is a system package  so it s for default system python  Thus  the scripts will always get the version currently linked to python3  but fail because the apt package is not present   General solution  NEVER change default python3 link  Ever  This also applies to python link - if an app was written in Python2 with some old syntax elements that don t work in Python3  the app will not work   My terminal broke that way because I use Terminator  which is apparently written in Python2 7 not compatible with Python3    Solutions presented here either suggest copying linking the apt package files or changing python3 link  Let s analyse both   Copying linking the apt package  This shouldn t be a problem because from around Python3 4 all python scripts work on newer versions as well  So far  But it may break in the future - if you keep your system long enough   Changing python3 link back  This is a great solution because we can get back to  quot never ever changing the link quot    quot But I like having to type just python  quot  - I like it too  That s how I got to this problem in the first place   In general  you should avoid manually changing system links - use update-alternatives instead to link different versions  This applies to any app with many versions  This will still break those system scripts  because it does change the link   but you can switch back and forth easily  without worrying whether you put link and dest in the right order or made a typo   Consider using other name than python python3 for your link or alias   Or add your own python python3 link to PATH  just like virtual environments do   without changing system links

User · Answer

If you re using python 3 5  downgrade to 3 4  That s the safest move to do   Under  usr lib python3 dist-packages you ll see  34m  which python 3 5 can t use  zhazha answer symlink to it

User · Answer

In addition to making a symbolic link for apt pkg so  you may want to make apt inst so in the same manner of apt pkg so   ln -s apt inst cpython-35m-x86 64-linux-gnu so apt inst so

User · Answer

For some reason my install was missing apt pkg so in the python3 dist-packages dir   apt pkg cpython-33m-x86 64-linux-gnu so was there    but  and I had to make a symlink apt pkg so - gt  apt pkg cpython-33m-x86 64-linux-gnu so in  usr lib python3 dist-packages  I m not sure whether my upgrade was broken or why this was the case  It occured after trying to upgrade  precise- raring- quantal upgrade

User · Answer

This happened to me on Ubuntu 18 04 2 after I tried to install Python3 7 from the deadsnakes repo   Solution was this  1  cd  usr lib python3 dist-packages   2  sudo ln -s apt pkg cpython-36m-x86 64-linux-gnu so apt pkg so

User · Answer

Make sure you have a working python-apt package  You could try and remove and install that package again to fix the problem with apt pkg so not being located   apt-get install python-apt

[python] python-dev installation error: ImportError: No module named apt_pkg

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