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While updating my nvidia drivers I got a warning about inconsistent python 3 package and the advise to reinstall python 3.

Searching the forum gave me another post with the exact same warning (Python 3 not working) and a nice solution by David Foerster https://askubuntu.com/a/914589/672852.

However, after trying this:

sudo apt install -f --reinstall python3 python3.4 python3-minimal python3.4-minimal libpython3.4-minimal

I got the following notice:

Pakketlijsten worden ingelezen... Klaar
Boom van vereisten wordt opgebouwd 
De statusinformatie wordt gelezen... Klaar
Let op, 'libpython3.4-minimal' wordt geselecteerd omwille van de regex 'python3.4'
Let op, 'libpython3.4-minimal' wordt geselecteerd omwille van de regex 'python3.4-minimal'
Pakket libpython3.4-minimal is niet beschikbaar, hoewel er naar verwezen wordt door
een ander pakket. Mogelijk betekent dit dat het pakket ontbreekt,
verouderd is, of enkel beschikbaar is van een andere bron
E: Pakket 'libpython3.4-minimal' heeft geen kandidaat voor installatie

And for the non-Dutch speakers:

Package libpython3.4-minimal is not available [...]
E: Package 'libpython3.4-minimal does not have a candidate for installation.

The question being: how do I reinstall Python3 now?

Oh yes, this problem started after a fresh install of 16.04. And I did the fresh install due to problems with the 17.04 upgrade.

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    Ubuntu 16.04 and also 17.04 have python3.5 instead of python3.4, so I suggest you try your command again, replacing all occurrences of 3.4 with 3.5. – Byte Commander Oct 1 '17 at 12:04
  • @ByteCommander Great, download worked. Unfortunately the next step: sudo dpkg -i *python3*.deb gives me the following errors: - no access to archive, file or folder doesn't exist. - error found while processing python3.deb – Jedidja Oct 1 '17 at 12:23
  • You don't need to manually install any .deb packages for Python. Why do you want to do that? – Byte Commander Oct 1 '17 at 12:41
  • @ByteCommander Well, I'm a novice and just following the instructions from someone more experienced. Does your comment mean I don't have to do anything else after downloading? – Jedidja Oct 1 '17 at 12:43
  • Yes, I just looked at David's answer and the second command block with the dpkg and stuff is only "If this doesn't work". So at the sudo apt install -f --reinstall ... seems to have worked in your case, you should be done. – Byte Commander Oct 1 '17 at 14:20
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Ubuntu 16.04 and newer versions have python3.5 instead of python3.4, see these search results on packages.ubuntu.com.

Therefore I suggest you try your command again, replacing all occurrences of 3.4 with 3.5:

sudo apt install -f --reinstall python3 python3.5 python3-minimal python3.5-minimal libpython3.5-minimal

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