I was upgrading from Ubuntu17.04(zesty) to 17.10(artful) , by do-release-upgrade and I do have the same problem as here How to fix "python installation is corrupted"?.

Tried remediation as mentioned in the note,

  1. update-alternatives --remove-all python
  2. sudo ln -sf /usr/bin/python3.5 /usr/bin/python
  3. removed miniconda3 directory
  4. sudo apt-get install --reinstall python

...but still the problem unresolved.
Can someone provide other solutions, appreciate your help.

  • #2 Makes more problems than it solves. /usr/bin/python should link to Python 2.7. /usr/bin/python3 should link to Python 3.6 (not 3.5) in 17.04. By mis-linking, you have seriously broken your system. – user535733 Dec 24 '17 at 14:20
  • Thank you. I liked python3 to 3.6, and python to 2.7. Then, do-release-upgrade showed another error: ""Original exception was: Traceback (most recent call last): File "/usr/bin/do-release-upgrade", line 11, in <module> from UpdateManager.Core.MetaRelease import MetaReleaseCore File "/usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py", line 25, in <module> import apt File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module> import apt_pkg ModuleNotFoundError: No module named 'apt_pkg' What should I do with this? – himagine Dec 25 '17 at 12:30
  • That's a different Question. One question per thread, please. This is a question/answer site, not a forum. – user535733 Dec 25 '17 at 13:27

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