jupyter-client

• Shutdown request sequence has been modified to be more graceful, it now is preceded by interrupt, and will also send a SIGTERM before forcibly killing the kernel. #620
• Removal of ipython_genutils as a dependency. It was implicit before; but required by at least traitlets thus avoiding issues. We are working on completely removing it from all jupyter dependencies; as it might lead to issues packaging for Python 3.10, and was mostly used for compatibility with python 2. (#620, #605)
• Address a race condition between shutdown_kernel and restarter. (#607.)

See the full list of pull-requests

• Move jedi pinning to test requirements #599

• Add change parameter needed for observer method of kernel_spec_manager trait #598

• Pin jedi<=0.17.2 #596

• Doc updates (#563, #564, #587)
• Fix path to the connection file #568
• Code cleanup (#574, #579)
• Silence kill_kernel when no process is present #576
• Remove extra_env and corresponding test #581
• Add documentation dependencies to setup.py #582
• Fix for Windows localhost IP addresses #584
• Drop Travis CI, add GitHub Actions #586
• Adapt KernelManager._kernel_spec_manager_changed to observe #588
• Allow use ~/ in the kernel's command or its arguments #589
• Change wait_for_ready logic #592
• Fix test_session with msgpack v1 #594

• Removed warnings in more cases for KernelManagers that use new cleanup method #560
• Some improved tests with a conversion to pytest pattern #561

• Gracefully Close ZMQ Context upon kernel shutdown to fix memory leak #548
• Fix for chained exceptions to preserve stacks (#552, #554)
• Fix start_kernel error when passing kernel_id #547
• Update to releasing docs #543

• Add AsyncKernelClient client_class to AsyncKernelManager #542
• Doc fix for xeus hyperlinks #540
• Doc typo fix #539

• Fixed a bug causing clients to sometimes hang after a stop call was made #536

• Subprocess kill action fix for async execution #535
• Doc fix for xeus kernel list #534

This release includes support for asyncio patterns! Downstream tools should soon have releases to additionally support async patterns.

• AsyncKernelManager and AsyncMultiKernelManager are now available for async jupyter_client interactions (#528, #529)
• Removed unused sphinx dependency (#518, #518).
• Added install instructions for pip to documentation #521
• Improved docs around version protocol and messaging (#522, #526)

The git history had to be reworked heavily in merging 5.x and master, so a link to all the changes at once in github had been left out as it's just confusing.

An exciting change in this release is some async support (huge thanks to @davidbrochart for doing most of the work)! See linked PR below for more details, we're working on integrating this into nbclient as well in the near future.

New Features:

• Added async API #506

Changes:

• Python 3.8 testing and support added #509
• Session.msg_id optimization #493
• Only cache ports if the cache_ports flag is set to True #492
• Removed direct dependency on pywin32 as this is now in jupyter core #489

Fixes:

• Prevent two kernels to have the same ports #490

Docs:

• Document the handling of error in do_execute #500

Breaking changes:

• Dropped support for Python 2.7!

• Backported memory leak fix #548 #555.

• Changed secure_write to be imported from jupyter_core with fix for extended usernames in Windows #483.

• Fixed issue with non-english windows permissions #478. Potential issue still open in use with jupyerlab.

• Important files creation now checks umask permissions #469.

• Fix bug with control channel socket introduced in 5.3.0 #456.

5.3.0 on GitHub

New Features:

• Multiprocessing and Threading support #437 and #450
• Setup package long_description #411

Changes:

• Control channel now in the public API #447
• Closing Jupyter Client is now faster #420
• Pip support improvements #421

Breaking changes:

• Dropped support for Python 3.3 and 3.4 (upstream packages dropped support already)

5.2.4 on GitHub

• Prevent creating new console windows on Windows #346
• Fix interrupts on Python 3.7 on Windows #408

5.2.3 on GitHub

• Fix hang on close in .ThreadedKernelClient (used in QtConsole) when using tornado with asyncio (default behavior of tornado 5, see #352).
• Fix errors when using deprecated .KernelManager.kernel_cmd (#343, #344).

5.2.2 on GitHub

• Fix .KernelSpecManager.get_all_specs method in subclasses that only override .KernelSpecManager.find_kernel_specs and .KernelSpecManager.get_kernel_spec. See #338 and #339.
• Eliminate occasional error messages during process exit #336.
• Improve error message when attempting to bind on invalid address #330.
• Add missing direct dependency on tornado #323.

5.2.1 on GitHub

• Add parenthesis to conditional pytest requirement to work around a bug in the wheel package, that generate a .whl which otherwise always depends on pytest see #324and #325.