zope.event
Very basic event publishing system
Decision gist · record as of 2026-08-14
Yes, if you need a lightweight, dependency-free event system for decoupling application components. The package is stable, actively maintained, and supports current Python versions. However, verify ZPL-2.1 license compatibility first (metadata marks it unclear), and confirm that synchronous-only dispatch meets your needs—if you require async events or complex routing, consider building on top of this or using a heavier framework.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low friction installation with no runtime dependencies.
- Active maintenance with recent release (108 days ago) and support for current Python versions including 3.14.
License · maintenance · safety
ZPL-2.1 (unclear) — Licensed under ZPL-2.1 (Zope Public License 2.1), but license treatment is marked unclear in the metadata—verify the actual license terms and compatibility with your project before relying on this package in proprietary or GPL-licensed codebases.
last release 2026-04-28 (108 days) · last repo commit 2026-04-28 · 45 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 33,538,693 downloads/mo, #766 on PyPI
Alternatives
Verify before relying
pip install zope.event
from zope.event import notify
class MyEvent:
pass
notify(MyEvent())- Whether ZPL-2.1 is compatible with your project's license (metadata marks treatment as unclear).
- Whether the synchronous-only dispatch model meets your application's performance requirements.
- How this integrates with zope.component's type-based dispatching if you plan to use both.
What it is and what it does
zope.event is a foundational event system for Python applications that need to decouple event producers from consumers. It provides a simple API for publishing events and a synchronous dispatcher that notifies all registered handlers. The package has no runtime dependencies and is designed as a minimal base layer—more sophisticated event systems like zope.component's type-based dispatcher can be built on top of it.
The package is actively maintained, supports modern Python versions (3.10 through 3.14), and runs on CPython, PyPy, and Jython. It's part of the Zope ecosystem and is used in applications that need lightweight, framework-agnostic event notification without the overhead of message queues or async machinery.
Use it for
- Decouple application components by having them publish and subscribe to events rather than calling each other directly.
- Build a plugin architecture where plugins register event handlers without the main application knowing about them.
- Implement a simple observer pattern for UI frameworks or configuration changes within a single process.
- Serve as the foundation for a more sophisticated event system that adds type-based or priority-based dispatch on top.
- Notify multiple handlers of state changes in a web application or service without tight coupling.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need a lightweight, dependency-free event system for decoupling application components.
The package is stable, actively maintained, and supports current Python versions. However, verify ZPL-2.1 license compatibility first (metadata marks it unclear), and confirm that synchronous-only dispatch meets your needs—if you require async events or complex routing, consider building on top of this or using a heavier framework.
Install
zope-event on PyPI
Before you install
Low friction installation with no runtime dependencies. Active maintenance with recent release (108 days ago) and support for current Python versions including 3.14. Repository shows steady activity.
Requires Python 3.10 or later.
License in practice
Licensed under ZPL-2.1 (Zope Public License 2.1), but license treatment is marked unclear in the metadata—verify the actual license terms and compatibility with your project before relying on this package in proprietary or GPL-licensed codebases.
Quickstart
pip install zope.event
from zope.event import notify
class MyEvent:
pass
notify(MyEvent())Verify before relying
- Whether ZPL-2.1 is compatible with your project's license (metadata marks treatment as unclear).
- Whether the synchronous-only dispatch model meets your application's performance requirements.
- How this integrates with zope.component's type-based dispatching if you plan to use both.
Package facts
| License | ZPL-2.1 unclear |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 108 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 33,538,693 / month, #766 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableFramework :: Zope :: 3Intended Audience :: DevelopersOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: JythonProgramming Language :: Python :: Implementation :: PyPyTopic :: Software Development :: Libraries :: Python Modules |
Evidence: zope_event-6.2-py3-none-any.whl
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See also zope.lifecycleevent · zope.processlifetime · PyPyDispatcher · zope.publisher · telegraph · zope.exceptions · zope.configuration · zope.component · blinker · Zope