pytest-reportlog
Replacement for the --resultlog option, focused in simplicity and extensibility
Decision gist · record as of 2026-08-14
Yes. This is a stable, actively maintained plugin with low install friction, no security issues, and a clear use case: anyone migrating from --resultlog or needing structured, real-time test event logging should use it. The MIT license and minimal dependencies make it safe for any project.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low friction: pure Python wheel with only pytest as a runtime dependency.
- Actively maintained with a recent release and no known vulnerabilities.
License · maintenance · safety
MIT (permissive) — MIT license permits unrestricted use, modification, and distribution in both open-source and commercial projects.
last release 2025-11-11 (276 days) · last repo commit 2026-08-03 · 104 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 801,875 downloads/mo, #5,021 on PyPI
Alternatives
Verify before relying
pip install pytest-reportlog
pytest your_tests.py --report-log=results.jsonl
# Read the JSON Lines output
import json
with open('results.jsonl') as f:
for line in f:
event = json.loads(line)
print(event['$report_type'], event.get('outcome'))- Whether compression formats (.gz, .bz2, .xz) require additional system libraries beyond Python stdlib.
- Real-time event processing guarantees and performance characteristics with large test suites.
What it is and what it does
pytest-reportlog is a pytest plugin that captures test execution events and writes them as JSON Lines to a file, one self-contained JSON object per line. It was created as a modern replacement for pytest's deprecated --resultlog option, focusing on simplicity and extensibility. Each line contains a report object with a $report_type identifier (e.g., SessionStart, TestReport, SessionFinish) plus event-specific fields like outcome, duration, and failure details. The file is flushed after each write, enabling real-time consumption by external systems.
The plugin supports automatic compression via common suffixes (.gz, .bz2, .xz) and includes a record_property fixture for attaching custom metadata to individual tests. It runs as a pytest plugin with no special configuration beyond installing the package and passing --report-log=FILE to pytest. The output format is designed for forward compatibility: consumers should ignore unrecognized report types and unknown keys, as future pytest versions may extend the objects.
Use it for
- Export test results to a structured format for CI/CD pipelines to parse and aggregate across multiple test runs.
- Stream test events in real-time to a monitoring system or dashboard during long test sessions.
- Attach custom properties (price, environment, build ID) to individual tests for post-analysis and reporting.
- Archive test execution history in compressed JSON Lines format for audit trails or compliance.
- Integrate pytest results with external tools that consume JSON events without needing custom pytest plugins.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
This is a stable, actively maintained plugin with low install friction, no security issues, and a clear use case: anyone migrating from --resultlog or needing structured, real-time test event logging should use it. The MIT license and minimal dependencies make it safe for any project.
Install
pytest-reportlog on PyPI
Before you install
Low friction: pure Python wheel with only pytest as a runtime dependency. Actively maintained with a recent release and no known vulnerabilities.
Requires Python 3.10 or later.
License in practice
MIT license permits unrestricted use, modification, and distribution in both open-source and commercial projects.
Quickstart
pip install pytest-reportlog
pytest your_tests.py --report-log=results.jsonl
# Read the JSON Lines output
import json
with open('results.jsonl') as f:
for line in f:
event = json.loads(line)
print(event['$report_type'], event.get('outcome'))Verify before relying
- Whether compression formats (.gz, .bz2, .xz) require additional system libraries beyond Python stdlib.
- Real-time event processing guarantees and performance characteristics with large test suites.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepytest |
| Maintenance | Actively maintained 276 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 801,875 / month, #5,021 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 :: PytestIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development :: Testing |
Evidence: pytest_reportlog-1.0.0-py3-none-any.whl
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