New question #690023 on Duplicity: https://answers.launchpad.net/duplicity/+question/690023
Hey! It's my first time here and I'm not sure if I'm using the system correctly. TL;DR: Duplicity didn't work after OS reinstall, probably due to a botched python installation. First an error showed during a backup, blocking it: Attempt 1 failed. TypeError: can only concatenate str (not "bytes") to strAttempt 1 failed. TypeError: can only concatenate str (not "bytes") to str After reinstalling from source there was another error. I reinstalled from a snap and got the same error, which stopped even running `duplicity --version`: in <module>from duplicity.dup_main import mainModuleNotFoundError: No module named 'duplicity' After reinstalling latest version of pip and trying to install duplicity from pip and being told that pip already installed it, I copied files like this: `cp -rp /usr/local/lib/python2.7/dist-packages/duplicity \ /usr/local/lib/python3.7/dist-packages/` which solved the problem. Thanks for your work on duplicity! Long version: Had issues using duplicity after a reinstall and moving from Ubuntu Mate 18.04 to 19.10. (Used program called Aptik to assist with moving, and it might have caused some chaos while reinstalling old packages. It could've also been me using python/pip in an unskilled way to install either b2 duplicity addon or some other software.) First there was this error: Attempt 1 failed. TypeError: can only concatenate str (not "bytes") to strAttempt 1 failed. TypeError: can only concatenate str (not "bytes") to str duckduckgoing for answer led to this thread: https://bugs.archlinux.org/task/65239 Here I got the idea to try running a more up-to-date version of duplicity in hope that the bugs were fixed in the latest version. I downloaded the source code and thanks to a really good documentation managed to build and install the newer duplicity. However here came another problem. When trying to run duplicity, even just duplicity --version, there was another error: in <module>from duplicity.dup_main import mainModuleNotFoundError: No module named 'duplicity' As I had no idea what import is or what module is, I started looking in the source catalog and saw a catalog named 'snap'. Here I got the idea to install duplicity as a snap package as it was something I'm familiar with. When trying to run the snap package, got the same error: in <module>from duplicity.dup_main import mainModuleNotFoundError: No module named 'duplicity' After purging python pip that was installed by the system and installing it from pip website, tried installing duplicity packages trough pip. Pip reported, that Requirement already satisfied: duplicity in /usr/local/lib/python2.7/dist-packages. And it was there, but still didn't work. Then I educated myself as to what python words 'import' and 'module' mean. That + reading the main duplicity source file (where the problem occurred) made me wonder why pip/duplicity installs into python 2.7 directory and not in python 3.7. I've copied the package preserving the modes with: cp -rp /usr/local/lib/python2.7/dist-packages/duplicity \ /usr/local/lib/python3.7/dist-packages/ This fixed it and allowed running duplicity. I'm not sure if the fault was with my python installation, but guessed that snap package should've run even in spite of that as it probably had it's own environment. Posting it here in case somebody else has the same issues and needs an idea on how to fix them. -- You received this question notification because your team duplicity-team is an answer contact for Duplicity. _______________________________________________ Mailing list: https://launchpad.net/~duplicity-team Post to : [email protected] Unsubscribe : https://launchpad.net/~duplicity-team More help : https://help.launchpad.net/ListHelp
