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PyPI · #605 most downloaded on PyPI
Jupyter Event System library
Last release 5 months ago
20 Apr 2026
Release timing varies
gaps range from 2 weeks to 1.2 years
Nearly every release is documented
notes for 16 of 17 stable releases
Nothing withdrawn
no release was ever pulled
4 years old
17 releases · first in 2022
One column per quarter.
[Bug] Fix empty error messages from failing event listeners #118 ( @Zsailer )
The following people contributed discussions, new ideas, code and documentation contributions, and review.
See our definition of contributors.
pop taskName for older version of python-json-logger #110 ( @Carreau )
Fix DeprecationWarning with patched python-json-logger #103 ( @cjwatson )
version type to str #104 (@afshin)KeyError when emitting an unregistered event schema #101 (@afshin)(GitHub contributors page for this release)
@afshin | @Carreau | @cjwatson | @davidbrochart | @manics | @Zsailer
Enable adding listeners to event before the event is registered #97 ( @Zsailer )
Maintenance and upkeep improvements
Clean up linting and fix a bug that was found #91 ( @blink1073 )
Allow for string annotations in listener signature #88 ( @blink1073 )
(GitHub contributors page for this release)
@blink1073 | @dependabot | @pre-commit-ci | @pydanny | @Zsailer
allow a 'message' field in an event schema #72 ( @Zsailer )
(GitHub contributors page for this release)
@blink1073 | @dcsaba89 | @hbcarlos | @kevin-bates | @pre-commit-ci | @Zsailer
Maintenance and upkeep improvements
Maintenance and upkeep improvements
Remove artificial cap on jsonschema dependency #61 (@kevin-bates)
Add typing file #60 (@blink1073)
Add pytest plugin for testing events in other libraries #23 (@Zsailer)
.emit call is a no-op when no listeners are registered. #24 (@Zsailer)(GitHub contributors page for this release)
@bollwyvl | @dlqqq | @kevin-bates | @Zsailer
Add method to remove listener #18 (@Zsailer)
Remove (duplicate) version argument from API #16 (@Zsailer)
Add new EventSchema and SchemaRegistry API #4 (@Zsailer)
Nothing published for this version
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