Fix json_default so that it’s closer to what ipykernel had before #698 (@martinRenou)
Clean up the pending task #697 (@shingo78)
fix kernel can only restart once issue #695 (@mofanke)
Prevent failure if kernel is not found when shutting it down #694 (@martinRenou)

Contributors to this release#

(GitHub contributors page for this release)

@davidbrochart | @martinRenou | @mofanke | @shingo78

7.0.3#

(Full Changelog)

Bugs fixed#

Address missing local-provisioner scenario #692 (@kevin-bates)
use load_connection_info(info) when constructing a blocking client #688 (@minrk)

Contributors to this release#

(GitHub contributors page for this release)

@kevin-bates | @minrk

7.0.2#

(Full Changelog)

Bugs fixed#

Don’t set event loop policy on Windows at import time #686 (@minrk)

Documentation improvements#

Improve migration guide #685 (@davidbrochart)

Contributors to this release#

(GitHub contributors page for this release)

7.0.1#

(Full Changelog)

Merged PRs#

Use formal method names when called internally #683 (@kevin-bates)

Contributors to this release#

(GitHub contributors page for this release)

@kevin-bates

7.0.0#

(Full Changelog)

Summary#

The 7.0 release brings a major feature in Kernel Provisioners, which enable the ability for third parties to manage the lifecycle of a kernel’s runtime environment.

Being a major release, there are some backward incompatible changes. Please see the migration guide for further details.

Enhancements made#

Kernel Provisioning - initial implementation #612 (@kevin-bates)

Bugs fixed#

Fix up some async method aliases in KernelManager #670 (@kevin-bates)
Support answer_yes when removing kernel specs #659 (@davidbrochart)
Include process ID in message ID #655 (@takluyver)
Fix qtconsole issues #638 (@davidbrochart)

Maintenance and upkeep improvements#

Added debugger key in kernel_info_reply #486 (@JohanMabille)
Prepare for use with Jupyter Releaser #676 (@afshin)
Force install jupyter_client master #675 (@davidbrochart)
Fix project name #674 (@vidartf)
Rename trait to allowed_kernelspecs #672 (@blink1073)
Remove block parameter from get_msg() #671 (@davidbrochart)
Only import nest_asyncio locally #665 (@SylvainCorlay)
Use a default serializer that is not only for date types #664 (@martinRenou)
Updated debug_info_response #657 (@JohanMabille)
Do not block on exit #651 (@impact27)
Update test kernel with native coroutine, remove async_generator dependency #646 (@kevin-bates)
setup.py and CI improvements #645 (@dolfinus)
Test downstream projects #644 (@davidbrochart)
Remove deprecations in kernel manager #643 (@kevin-bates)
Add block=True back to get_msg() #641 (@davidbrochart)
Pin python>=3.6.1 #636 (@davidbrochart)
Use pre-commit #631 (@davidbrochart)
Attempt CI with ipykernel 6.0 prerelease #629 (@SylvainCorlay)
Make KernelManager subclass tests DRY #628 (@davidbrochart)
Add tests to ensure MultiKernelManager subclass methods are called #627 (@kevin-bates)
Add type annotations, refactor sync/async #623 (@davidbrochart)

Documentation improvements#

Create migration guide #681 (@blink1073)
Update changelog for 7.0.0rc0 #673 (@blink1073)
Added documentation for richInspectVariables request #654 (@JohanMabille)
Change to edit_magic payload #652 (@yitzchak)
Added missing documentation for the inspectVariables request and resp… #649 (@JohanMabille)
Add status field to other replies in documentation #648 (@yitzchak)

Contributors to this release#

(GitHub contributors page for this release)

6.2.0#

Yanked (PyPI) and marked as broken (conda)

6.1.13#

Yanked (PyPI) and marked as broken (conda)

6.1.12#

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

6.1.11#

Move jedi pinning to test requirements #599

6.1.10#

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

6.1.9#

Pin jedi<=0.17.2 #596

6.1.8#

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

6.1.6#

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

6.1.5#

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

6.1.4#

(Deleted release with incorrect local files)

6.1.3#

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

6.1.2#

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

6.1.1#

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

6.1.0#

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)

6.0.0#

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!

5.3.5#

Backported memory leak fix #548 #555.

5.3.4#

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

5.3.3#

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

5.3.2#

Important files creation now checks umask permissions #469.

5.3.1#

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

5.3.0#

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#

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#

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#

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#

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.

5.2#

5.2 on GitHub

Define Jupyter protocol version 5.3:
- Kernels can now opt to be interrupted by a message sent on the control channel instead of a system signal. See kernelspecs and msging_interrupt #294.
New jupyter kernel command to launch an installed kernel by name #240.
Kernelspecs where the command starts with e.g. python3 or python3.6—matching the version jupyter_client is running on—are now launched with the same Python executable as the launching process #306. This extends the special handling of python added in 5.0.
Command line arguments specified by a kernelspec can now include {resource_dir}, which will be substituted with the kernelspec resource directory path when the kernel is launched #289.
Kernelspecs now have an optional metadata field to hold arbitrary metadata about kernels—see kernelspecs #274.
Make the KernelRestarter class used by a KernelManager configurable #290.
When killing a kernel on Unix, kill its process group #314.
If a kernel dies soon after starting, reassign random ports before restarting it, in case one of the previously chosen ports has been bound by another process #279.
Avoid unnecessary filesystem operations when finding a kernelspec with .KernelSpecManager.get_kernel_spec #311.
.KernelSpecManager.get_all_specs will no longer raise an exception on encountering an invalid kernel.json file. It will raise a warning and continue #310.
Check for non-contiguous buffers before trying to send them through ZMQ #258.
Compatibility with upcoming Tornado version 5.0 #304.
Simplify setup code by always using setuptools #284.
Soften warnings when setting the sticky bit on runtime files fails #286.
Various corrections and improvements to documentation.

5.1#

5.1 on GitHub

Define Jupyter protocol version 5.2, resolving ambiguity of cursor_pos field in the presence of unicode surrogate pairs.

::: {.seealso} cursor_pos_unicode_note :::
Add Session.clone for making a copy of a Session object without sharing the digest history. Reusing a single Session object to connect multiple sockets to the same IOPub peer can cause digest collisions.
Avoid global references preventing garbage collection of background threads.

5.0#

5.0.1#

5.0.1 on GitHub

Update internal protocol version number to 5.1, which should have been done in 5.0.0.

5.0.0#

5.0.0 on GitHub

New features:

Implement Jupyter protocol version 5.1.
Introduce jupyter run command for running scripts with a kernel, for instance:
```
jupyter run --kernel python3 myscript.py
```
New method .BlockingKernelClient.execute_interactive for running code and capturing or redisplaying its output.
New KernelManager.shutdown_wait_time configurable for adjusting the time for a kernel manager to wait after politely requesting shutdown before it resorts to forceful termination.

Fixes:

Set sticky bit on connection-file directory to avoid getting cleaned up.
jupyter_client.launcher.launch_kernel passes through additional options to the underlying Popen, matching KernelManager.start_kernel.
Check types of buffers argument in .Session.send, so that TypeErrors are raised immediately, rather than in the eventloop.

Changes:

In kernelspecs, if the executable is the string python (as opposed to an absolute path), sys.executable will be used rather than resolving python on PATH. This should enable Python-based kernels to install kernelspecs as part of wheels.
kernelspec names are now validated. They should only include ascii letters and numbers, plus period, hyphen, and underscore.

Backward-incompatible changes:

:py.datetime objects returned in parsed messages are now always timezone-aware. Timestamps in messages without timezone info are interpreted as the local timezone, as this was the behavior in earlier versions.

4.4#

4.4.0#

4.4 on GitHub

Add .KernelClient.load_connection_info on KernelClient, etc. for loading connection info directly from a dict, not just from files.
Include parent headers when adapting messages from older protocol implementations (treats parent headers the same as headers).
Compatibility fixes in tests for recent changes in ipykernel.

4.3#

4.3.0#

4.3 on GitHub

Adds --sys-prefix argument to jupyter kernelspec install, for better symmetry with jupyter nbextension install, etc.

4.2#

4.2.2#

4.2.2 on GitHub

Another fix for the start_new_kernel issue in 4.2.1 affecting slow-starting kernels.

4.2.1#

4.2.1 on GitHub

Fix regression in 4.2 causing start_new_kernel to fail while waiting for kernels to become available.

4.2.0#

4.2.0 on GitHub

added jupyter kernelspec remove for removing kernelspecs
allow specifying the environment for kernel processes via the env argument
added name field to connection files identifying the kernelspec name, so that consumers of connection files (alternate frontends) can identify the kernelspec in use
added KernelSpecManager.get_all_specs for getting all kernelspecs more efficiently
various improvements to error messages and documentation

4.1#

4.1.0#

4.1.0 on GitHub

Highlights:

Setuptools fixes for jupyter kernelspec
jupyter kernelspec list includes paths
add KernelManager.blocking_client
provisional implementation of comm_info requests from upcoming 5.1 release of the protocol

4.0#

The first release of Jupyter Client as its own package.