>From the ipython bug report on github, https://github.com/ipython/ipython/issues/12348, the following solves this bug:
`pip3 install --upgrade --user prompt_toolkit` which upgraded me to prompt-toolkit-3.0.5 Does that mean that this should be a dependency in some recent Ubuntu upgrade chain? ** Bug watch added: github.com/ipython/ipython/issues #12348 https://github.com/ipython/ipython/issues/12348 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883964 Title: pdb debugger in ipython3 unusable due to "QObject: Cannot create children for a parent that is in a different thread." errors when using matplotlib To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ipython/+bug/1883964/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs