Am 28.04.20 um 19:32 schrieb Narges:
I added these lines to /etc/apt/sources.list:
deb [ arch=amd64 ] https://downloads.skewed.de/apt bullseye main deb [ arch=amd64 ] https://downloads.skewed.de/apt buster main deb [ arch=amd64 ] https://downloads.skewed.de/apt sid main deb https://downloads.skewed.de/apt/raring raring universe deb-src https://downloads.skewed.de/apt/raring raring universe deb [ arch=amd64 ] https://downloads.skewed.de/apt bionic main deb [ arch=amd64 ] https://downloads.skewed.de/apt bionic beaver main
And after that I wrote "sudo apt-get update" and then "sudo apt-get install python3-graph-tool". But the problem still is not solved.
Why did you add all these lines? You only need the one for your distribution: deb [ arch=amd64 ] https://downloads.skewed.de/apt bionic main -- Tiago de Paula Peixoto <tiago@skewed.de>