pipelinewise-singer-python
Singer.io utility library - PipelineWise compatible
Decision gist · record as of 2026-08-14
Yes, if you are building or extending PipelineWise data pipelines and need to emit Singer-formatted output from Python. The package is actively maintained, has low install friction, and carries a permissive license. The narrow Python version constraint (3.12–3.13) is a significant limitation if your project targets a wider range; verify compatibility with your environment before committing.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.12 or 3.13 (capped_below_current); earlier or later versions will not work.
- Low install friction with a pure-Python wheel and seven common dependencies.
- Active maintenance with a recent release, though the repository has modest visibility (8 stars).
License · maintenance · safety
permissive license (permissive) — Permissive Apache License 2.0 allows commercial and private use with minimal restrictions.
last release 2026-04-22 (114 days) · last repo commit 2026-04-22 · 8 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 934,899 downloads/mo, #4,695 on PyPI
Alternatives
Verify before relying
pip install pipelinewise-singer-python
import singer
singer.write_schema('my_table', {'properties': {'id': {'type': 'string', 'key': True}}}, ['id'])
singer.write_records('my_table', [{'id': 'b'}, {'id': 'd'}])
singer.write_state({'my_table': 'd'})- Whether the narrow Python version range (3.12–3.13) is intentional or a packaging constraint that may be relaxed.
- How actively the PipelineWise fork diverges from the upstream singer-python project and whether upstream fixes are backported.
What it is and what it does
pipelinewise-singer-python is a Python library that implements the Singer protocol for writing standardized data records. It's a maintained fork of the original Singer library, adapted for use within PipelineWise data pipelines. The package provides functions to write schemas, records, and state information in Singer format—a line-delimited JSON standard used in data extraction and loading workflows.
The library depends on common utilities like jsonschema for validation, orjson for fast JSON serialization, and backoff for retry logic. It's designed to be used within a Python environment (typically a virtualenv) to emit Singer-formatted output that downstream tools can consume. The package supports optional logging configuration via an environment variable, allowing callers to integrate it into their own logging infrastructure.
Use it for
- Build custom data extractors that emit Singer-formatted records for ingestion into PipelineWise.
- Integrate Python-based data sources into Singer-compatible ETL pipelines.
- Write schema and state metadata alongside record data in a standardized format for data synchronization.
- Extend PipelineWise tap connectors with Python logic that outputs Singer protocol messages.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are building or extending PipelineWise data pipelines and need to emit Singer-formatted output from Python.
The package is actively maintained, has low install friction, and carries a permissive license. The narrow Python version constraint (3.12–3.13) is a significant limitation if your project targets a wider range; verify compatibility with your environment before committing.
Install
pipelinewise-singer-python on PyPI
Before you install
Low install friction with a pure-Python wheel and seven common dependencies. Active maintenance with a recent release, though the repository has modest visibility (8 stars).
Requires Python 3.12 or 3.13 (capped_below_current); earlier or later versions will not work.
License in practice
Permissive Apache License 2.0 allows commercial and private use with minimal restrictions.
Quickstart
pip install pipelinewise-singer-python
import singer
singer.write_schema('my_table', {'properties': {'id': {'type': 'string', 'key': True}}}, ['id'])
singer.write_records('my_table', [{'id': 'b'}, {'id': 'd'}])
singer.write_state({'my_table': 'd'})Verify before relying
- Whether the narrow Python version range (3.12–3.13) is intentional or a packaging constraint that may be relaxed.
- How actively the PipelineWise fork diverges from the upstream singer-python project and whether upstream fixes are backported.
Package facts
| License | permissive license permissive |
| Python support | Capped below the current Python release <3.13,>=3.12 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 7 packageswraptpytzjsonschemaorjsonpython-dateutilbackoffciso8601 |
| Maintenance | Actively maintained 114 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 934,899 / month, #4,695 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | License :: OSI Approved :: Apache Software LicenseProgramming Language :: Python :: 3 :: Only |
Evidence: pipelinewise_singer_python-3.0.2-py3-none-any.whl
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