sseclient
Python client library for reading Server Sent Event streams.
Decision gist · record as of 2026-08-14
Yes, if you need straightforward SSE consumption and can accept an aging codebase. The package is stable, has no dependencies, and carries permissive licensing. However, do not install if you require active maintenance, explicit modern Python version guarantees, or ongoing bug fixes—consider alternatives if your project demands frequent updates.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Package classifiers indicate Python 2.7 and Python 3 support; compatibility with specific modern Python versions is not explicitly stated.
- High install friction: the package is aging with latest release 2020-09-25 and no runtime dependencies, but active maintenance has slowed significantly.
- Suitable for stable, non-critical integrations where SSE support is needed without ongoing updates.
License · maintenance · safety
permissive license (permissive) — MIT license (permissive) means you can use, modify, and distribute this package freely in commercial or private projects with minimal restrictions—only attribution is typically required.
last release 2020-09-25 (2149 days) · last repo commit 2025-06-03 · 136 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 222,339 downloads/mo, #9,266 on PyPI
Alternatives
Verify before relying
pip install sseclient
from sseclient import SSEClient
messages = SSEClient('http://mysite.com/sse_stream/')
for msg in messages:
print(msg.data)- Whether the package works reliably with modern Python versions beyond the generic 'Python 3' classifier.
- Whether automatic reconnection and retry logic handle edge cases in the SSE spec as documented.
- Current test coverage and whether the 11 passing tests from development still apply to version 0.0.27.
What it is and what it does
sseclient is a minimal Python client library for consuming Server Sent Event streams over HTTP. It wraps an SSE endpoint URL and provides an iterator interface: each iteration yields a message object with a 'data' attribute and optional 'event', 'id', and 'retry' fields. The library handles automatic reconnection and retry logic, allowing the server to control retry delays via SSE protocol directives.
The package has no runtime dependencies and accepts any keyword arguments supported by the Requests library (headers, auth, etc.) during initialization. It is marked Production/Stable but aging: the latest release was 2020-09-25, and active maintenance has slowed. It is suitable for applications that need straightforward SSE consumption without frequent updates or cutting-edge feature additions.
Use it for
- Consume real-time event streams from a server (e.g., live notifications, log tails, stock price updates) in a simple for-loop.
- Build a monitoring client that listens to SSE endpoints and processes incoming events with custom logic.
- Integrate SSE-based APIs (e.g., weather alerts, chat notifications) into a Python application without external async frameworks.
- Prototype or maintain legacy applications that rely on SSE for push-like communication without switching to WebSockets.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need straightforward SSE consumption and can accept an aging codebase.
The package is stable, has no dependencies, and carries permissive licensing. However, do not install if you require active maintenance, explicit modern Python version guarantees, or ongoing bug fixes—consider alternatives if your project demands frequent updates.
Install
sseclient on PyPI
Before you install
High install friction: the package is aging with latest release 2020-09-25 and no runtime dependencies, but active maintenance has slowed significantly. Suitable for stable, non-critical integrations where SSE support is needed without ongoing updates.
Package classifiers indicate Python 2.7 and Python 3 support; compatibility with specific modern Python versions is not explicitly stated.
License in practice
MIT license (permissive) means you can use, modify, and distribute this package freely in commercial or private projects with minimal restrictions—only attribution is typically required.
Quickstart
pip install sseclient
from sseclient import SSEClient
messages = SSEClient('http://mysite.com/sse_stream/')
for msg in messages:
print(msg.data)Verify before relying
- Whether the package works reliably with modern Python versions beyond the generic 'Python 3' classifier.
- Whether automatic reconnection and retry logic handle edge cases in the SSE spec as documented.
- Current test coverage and whether the 11 passing tests from development still apply to version 0.0.27.
Package facts
| License | permissive license permissive |
| Python support | Not specified |
| Install friction | High. Source build required |
| Runtime dependencies | None |
| Maintenance | Aging 2,149 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 222,339 / month, #9,266 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/StableIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 2.7Programming Language :: Python :: 3 |
Evidence: sseclient-0.0.27.tar.gz
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See also filigran-sseclient · launchdarkly-eventsource · requests-sse · sseclient-py · httpx-sse · aiohttp-sse-client · aiohttp-sse-client2 · aiohttp-sse · sse-starlette