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https://github.com/hynek/structlog

Simple, powerful, and fast logging for Python.
https://github.com/hynek/structlog

logging python structured-logging

Last synced: about 2 months ago
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Simple, powerful, and fast logging for Python.

Host: GitHub
URL: https://github.com/hynek/structlog
Owner: hynek
License: other
Created: 2013-08-13T15:55:58.000Z (about 11 years ago)
Default Branch: main
Last Pushed: 2024-07-26T21:35:02.000Z (about 2 months ago)
Last Synced: 2024-07-27T08:24:51.293Z (about 2 months ago)
Topics: logging, python, structured-logging
Language: Python
Homepage: https://www.structlog.org/
Size: 5.41 MB
Stars: 3,346
Watchers: 36
Forks: 211
Open Issues: 26
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: .github/CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE-APACHE
- Code of conduct: .github/CODE_OF_CONDUCT.md
- Security: .github/SECURITY.md

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README

        # *structlog*: Structured Logging for Python



   

      

   





   

   

   

   

   

   



Simple. Powerful. Fast. Pick three.


*structlog* is *the* production-ready logging solution for Python:

- **Simple**: Everything is about **functions** that take and return **dictionaries** – all hidden behind **familiar APIs**.

- **Powerful**: Functions and dictionaries aren’t just simple but also powerful.

  *structlog* leaves *you* in control.

- **Fast**: *structlog* is not hamstrung by designs of yore.

  Its flexibility comes not at the price of performance.

Thanks to its flexible design, *you* choose whether you want *structlog* to take care of the **output** of your log entries or whether you prefer to **forward** them to an existing logging system like the standard library's `logging` module.

The output format is just as flexible and *structlog* comes with support for JSON, [*logfmt*](https://brandur.org/logfmt), as well as pretty console output out-of-the-box:

[![image](https://github.com/hynek/structlog/blob/main/docs/_static/console_renderer.png?raw=true)](https://github.com/hynek/structlog/blob/main/docs/_static/console_renderer.png?raw=true)

## Sponsors

*structlog* would not be possible without our [amazing sponsors](https://github.com/sponsors/hynek).

Especially those generously supporting us at the *The Organization* tier and higher:















   Please consider joining them to help make structlog’s maintenance more sustainable!



---

*structlog* has been successfully used in production at every scale since **2013**, while embracing cutting-edge technologies like *asyncio*, context variables, or type hints as they emerged.

Its paradigms proved influential enough to [help design](https://twitter.com/sirupsen/status/638330548361019392) structured logging [packages across ecosystems](https://github.com/sirupsen/logrus).

A short explanation on *why* structured logging is good for you, and why *structlog* is the right tool for the job can be found in the [Why chapter](https://www.structlog.org/en/stable/why.html) of our documentation.

Once you feel inspired to try it out, check out our friendly [Getting Started tutorial](https://www.structlog.org/en/stable/getting-started.html).

For a fully-fledged zero-to-hero tutorial, check out [*A Comprehensive Guide to Python Logging with structlog*](https://betterstack.com/community/guides/logging/structlog/).

If you prefer videos over reading, check out [Markus Holtermann](https://chaos.social/@markush)'s talk *Logging Rethought 2: The Actions of Frank Taylor Jr.*:



   

      

   



## Credits

*structlog* is written and maintained by [Hynek Schlawack](https://hynek.me/).

The idea of bound loggers is inspired by previous work by [Jean-Paul Calderone](https://github.com/exarkun) and [David Reid](https://github.com/dreid).

The development is kindly supported by my employer [Variomedia AG](https://www.variomedia.de/), *structlog*’s [Tidelift subscribers](https://tidelift.com/?utm_source=lifter&utm_medium=referral&utm_campaign=hynek), and all my amazing [GitHub Sponsors](https://github.com/sponsors/hynek).

The logs-loving beaver logo has been contributed by [Lynn Root](https://www.roguelynn.com).

## Project Links

- [**Get Help**](https://stackoverflow.com/questions/tagged/structlog) (use the *structlog* tag on Stack Overflow)

- [**PyPI**](https://pypi.org/project/structlog/)

- [**GitHub**](https://github.com/hynek/structlog)

- [**Documentation**](https://www.structlog.org/)

- [**Changelog**](https://github.com/hynek/structlog/tree/main/CHANGELOG.md)

- [**Third-party Extensions**](https://github.com/hynek/structlog/wiki/Third-party-Extensions)

## *structlog* for Enterprise

Available as part of the Tidelift Subscription.

The maintainers of *structlog* and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source packages you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact packages you use. [Learn more.](https://tidelift.com/?utm_source=lifter&utm_medium=referral&utm_campaign=hynek)