IPykernel 6.0 is the first major release in about two years, that brings a number of improvements, code cleanup, and new
features to IPython.
You should be able to view all closed issues and merged Pull Request for this
milestone on GitHub,
as for any major releases, we advise greater care when updating that for minor
release and welcome any feedback (~50 Pull-requests).
IPykernel 6 should contain all changes of the 5.x series, in addition to the
following non-exhaustive changes.
Support for the debugger protocol, when using
frontend supporting the debugger protocol you should have access to the
The control channel on IPykernel 6.0 is run in a separate thread, this may
change the order in which messages are processed, though this change was necessary
to accommodate the debugger.
We now have a new dependency:
matplotlib-inline, this helps to separate the
circular dependency between IPython/IPykernel and matplotlib.
All outputs to stdout/stderr should now be captured, including subprocesses
and output of compiled libraries (blas, lapack…). In notebook
server, some outputs that would previously go to the notebooks logs will now
both head to notebook logs and in notebooks outputs. In terminal frontend
like Jupyter Console, Emacs or other, this may ends up as duplicated outputs.
coroutines are now native (async-def) , instead of using tornado’s
OutStreams can now be configured to report
istty() == True, while this
should make some output nicer (for example colored), it is likely to break
others. Use with care.
You can view the full release notes here