To revert, just delete the /etc/apt/preferences file if you created it, otherwise just remove those lines from it. You'll notice that the message "python-apt was held back" or something similar will come up now when you do an apt-get upgrade, which is because of that file.
To revert, just delete the /etc/apt/ preferences file if you created it, otherwise just remove those lines from it. You'll notice that the message "python-apt was held back" or something similar will come up now when you do an apt-get upgrade, which is because of that file.