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Changes in IPython kernel

  • Set stop_on_error_timeout default to 0.0 matching pre 5.5.0 default behavior with correctly working flag from 5.5.0.

5.5

5.5.0

  • kernelspec: ensure path is writable before writing kernel.json. #593
  • Add configure_inline_support and call it in the shell. #590
  • Fix stop_on_error_timeout to now properly abort execute_request's that fall within the timeout after an error. #572

5.4

5.4.3

  • Rework wait_for_ready logic. #578

5.4.2

  • Revert "Fix stop_on_error_timeout blocking other messages in queue". #570

5.4.1

  • Invalid syntax in ipykernel/log.py. #567

5.4.0

5.4.0 is generally focused on code quality improvements and tornado asyncio compatibility.

  • Add github actions, bail on asyncio patch for tornado 6.1. #564
  • Start testing on Python 3.9. #551
  • Fix stack levels for ipykernel's deprecation warnings and stop using some deprecated APIs. #547
  • Add env parameter to kernel installation #541
  • Fix stop_on_error_timeout blocking other messages in queue. #539
  • Remove most of the python 2 compat code. #537
  • Remove u-prefix from strings. #538

5.3

5.3.4

  • Only run Qt eventloop in the shell stream. #531

5.3.3

  • Fix QSocketNotifier in the Qt event loop not being disabled for the control channel. #525

5.3.2

  • Restore timer based event loop as a Windows-compatible fallback. #523

5.3.1

  • Fix #520: run post_execute and post_run_cell on async cells #521
  • Fix exception causes in zmqshell.py #516
  • Make pdb on Windows interruptible #490

5.3.0

5.3.0 Adds support for Trio event loops and has some bug fixes.

  • Fix ipython display imports #509
  • Skip test_unc_paths if OS is not Windows #507
  • Allow interrupting input() on Windows, as part of effort to make pdb interruptible #498
  • Add Trio Loop #479
  • Flush from process even without newline #478

5.2

5.2.1

  • Handle system commands that use UNC paths on Windows #500
  • Add offset argument to seek in io test #496

5.2.0

5.2.0 Includes several bugfixes and internal logic improvements.

  • Produce better traceback when kernel is interrupted #491
  • Add InProcessKernelClient.control_channel for compatibility with jupyter-client v6.0.0 #489
  • Drop support for Python 3.4 #483
  • Work around issue related to Tornado with python3.8 on Windows (#480, #481)
  • Prevent entering event loop if it is None #464
  • Use shell.input_transformer_manager when available #411

5.1

5.1.4

5.1.4 Includes a few bugfixes, especially for compatibility with Python 3.8 on Windows.

  • Fix pickle issues when using inline matplotlib backend #476
  • Fix an error during kernel shutdown #463
  • Fix compatibility issues with Python 3.8 (#456, #461)
  • Remove some dead code (#474, #467)

5.1.3

5.1.3 Includes several bugfixes and internal logic improvements.

  • Fix comm shutdown behavior by adding a deleting option to close which can be set to prevent registering new comm channels during shutdown (#433, #435)
  • Fix Heartbeat._bind_socket to return on the first bind (#431)
  • Moved InProcessKernelClient.flush to DummySocket (#437)
  • Don't redirect stdout if nose machinery is not present (#427)
  • Rename _asyncio.py to _asyncio_utils.py to avoid name conflicts on Python 3.6+ (#426)
  • Only generate kernelspec when installing or building wheel (#425)
  • Fix priority ordering of control-channel messages in some cases #443

5.1.2

5.1.2 fixes some socket-binding race conditions that caused testing failures in nbconvert.

  • Fix socket-binding race conditions (#412, #419)
  • Add a no-op flush method to DummySocket and comply with stream API (#405)
  • Update kernel version to indicate kernel v5.3 support (#394)
  • Add testing for upcoming Python 3.8 and PEP 570 positional parameters (#396, #408)

5.1.1

5.1.1 fixes a bug that caused cells to get stuck in a busy state.

  • Flush after sending replies #390

5.1.0

5.1.0 fixes some important regressions in 5.0, especially on Windows.

5.1.0 on GitHub

  • Fix message-ordering bug that could result in out-of-order executions, especially on Windows #356
  • Fix classifiers to indicate dropped Python 2 support #354
  • Remove some dead code #355
  • Support rich-media responses in inspect_requests (tooltips) #361

5.0

5.0.0

5.0.0 on GitHub

  • Drop support for Python 2. ipykernel 5.0 requires Python >= 3.4
  • Add support for IPython's asynchronous code execution #323
  • Update release process in CONTRIBUTING.md #339

4.10

4.10 on GitHub

  • Fix compatibility with IPython 7.0 #348
  • Fix compatibility in cases where sys.stdout can be None #344

4.9

4.9.0

4.9.0 on GitHub

  • Python 3.3 is no longer supported #336
  • Flush stdout/stderr in KernelApp before replacing #314
  • Allow preserving stdout and stderr in KernelApp #315
  • Override writable method on OutStream #316
  • Add metadata to help display matplotlib figures legibly #336

4.8

4.8.2

4.8.2 on GitHub

  • Fix compatibility issue with qt eventloop and pyzmq 17 #307.

4.8.1

4.8.1 on GitHub

  • set zmq.ROUTER_HANDOVER socket option when available to workaround libzmq reconnect bug #300.
  • Fix sdists including absolute paths for kernelspec files, which prevented installation from sdist on Windows #306.

4.8.0

4.8.0 on GitHub

  • Cleanly shutdown integrated event loops when shutting down the kernel. #290
  • %gui qt now uses Qt 5 by default rather than Qt 4, following a similar change in terminal IPython. #293
  • Fix event loop integration for asyncio when run with Tornado 5, which uses asyncio where available. #296

4.7

4.7.0

4.7.0 on GitHub

  • Add event loop integration for asyncio.
  • Use the new IPython completer API.
  • Add support for displaying GIF images (mimetype image/gif).
  • Allow the kernel to be interrupted without killing the Qt console.
  • Fix is_complete response with cell magics.
  • Clean up encoding of bytes objects.
  • Clean up help links to use https and improve display titles.
  • Clean up ioloop handling in preparation for tornado 5.

4.6

4.6.1

4.6.1 on GitHub

  • Fix eventloop-integration bug preventing Qt windows/widgets from displaying with ipykernel 4.6.0 and IPython ≥ 5.2.
  • Avoid deprecation warnings about naive datetimes when working with jupyter_client ≥ 5.0.

4.6.0

4.6.0 on GitHub

  • Add to API DisplayPublisher.publish two new fully backward-compatible keyword-args:

    • update: bool
    • transient: dict

  • Support new transient key in display_data messages spec for publish. For a display data message, transient contains data that shouldn't be persisted to files or documents. Add a display_id to this transient dict by display(obj, display_id=\...)

  • Add ipykernel_launcher module which removes the current working directory from sys.path before launching the kernel. This helps to reduce the cases where the kernel won't start because there's a random.py (or similar) module in the current working directory.

  • Add busy/idle messages on IOPub during processing of aborted requests

  • Add active event loop setting to GUI, which enables the correct response to IPython's is_event_loop_running_xxx

  • Include IPython kernelspec in wheels to reduce reliance on "native kernel spec" in jupyter_client

  • Modify OutStream to inherit from TextIOBase instead of object to improve API support and error reporting

  • Fix IPython kernel death messages at start, such as "Kernel Restarting..." and "Kernel appears to have died", when parent-poller handles PID 1

  • Various bugfixes

4.5

4.5.2

4.5.2 on GitHub

  • Fix bug when instantiating Comms outside of the IPython kernel (introduced in 4.5.1).

4.5.1

4.5.1 on GitHub

  • Add missing stream parameter to overridden getpass
  • Remove locks from iopub thread, which could cause deadlocks during debugging
  • Fix regression where KeyboardInterrupt was treated as an aborted request, rather than an error
  • Allow instantiating Comms outside of the IPython kernel

4.5.0

4.5 on GitHub

  • Use figure.dpi instead of savefig.dpi to set DPI for inline figures
  • Support ipympl matplotlib backend (requires IPython update as well to fully work)
  • Various bugfixes, including fixes for output coming from threads, and input when called with non-string prompts, which stdlib allows.

4.4

4.4.1

4.4.1 on GitHub

  • Fix circular import of matplotlib on Python 2 caused by the inline backend changes in 4.4.0.

4.4.0

4.4.0 on GitHub

  • Use MPLBACKEND environment variable to tell matplotlib >= 1.5 use use the inline backend by default. This is only done if MPLBACKEND is not already set and no backend has been explicitly loaded, so setting MPLBACKEND=Qt4Agg or calling %matplotlib notebook or matplotlib.use('Agg') will take precedence.
  • Fixes for logging problems caused by 4.3, where logging could go to the terminal instead of the notebook.
  • Add --sys-prefix and --profile arguments to ipython kernel install.
  • Allow Comm (Widget) messages to be sent from background threads.
  • Select inline matplotlib backend by default if %matplotlib magic or matplotlib.use() are not called explicitly (for matplotlib >= 1.5).
  • Fix some longstanding minor deviations from the message protocol (missing status: ok in a few replies, connect_reply format).
  • Remove calls to NoOpContext from IPython, deprecated in 5.0.

4.3

4.3.2

  • Use a nonempty dummy session key for inprocess kernels to avoid security warnings.

4.3.1

  • Fix Windows Python 3.5 incompatibility caused by faulthandler patch in 4.3

4.3.0

4.3.0 on GitHub

  • Publish all IO in a thread, via IOPubThread. This solves the problem of requiring sys.stdout.flush to be called in the notebook to produce output promptly during long-running cells.

  • Remove references to outdated IPython guiref in kernel banner.

  • Patch faulthandler to use sys.__stderr__ instead of forwarded sys.stderr, which has no fileno when forwarded.

  • Deprecate some vestiges of the Big Split:

    • ipykernel.find_connection_file is deprecated. Use jupyter_client.find_connection_file instead.

    - Various pieces of code specific to IPython parallel are deprecated in ipykernel and moved to ipyparallel.

4.2

4.2.2

4.2.2 on GitHub

  • Don't show interactive debugging info when kernel crashes
  • Fix handling of numerical types in json_clean
  • Testing fixes for output capturing

4.2.1

4.2.1 on GitHub

  • Fix default display name back to "Python X" instead of "pythonX"

4.2.0

4.2 on GitHub

  • Support sending a full message in initial opening of comms (metadata, buffers were not previously allowed)
  • When using ipython kernel install --name to install the IPython kernelspec, default display-name to the same value as --name.

4.1

4.1.1

4.1.1 on GitHub

  • Fix missing ipykernel.__version__ on Python 2.
  • Fix missing target_name when opening comms from the frontend.

4.1.0

4.1 on GitHub

  • add ipython kernel install entrypoint for installing the IPython kernelspec
  • provisional implementation of comm_info request/reply for msgspec v5.1

4.0

4.0 on GitHub

4.0 is the first release of ipykernel as a standalone package.