---
id: lazr-config
version: "4.0.0"
license: LGPL v3
license_treatment: copyleft
maintenance: active
---

# lazr.config — Create configuration schemas, and process and validate configurations.

License: copyleft · Maintenance: active · Downloads: 661.0K/mo

## What it is and what it does

lazr.config is a configuration management library that lets you define schemas for configuration data and validate configurations against those schemas. It handles the parsing and processing of configuration files, ensuring they conform to a declared structure. The package is built on zope.interface and lazr.delegates, integrating with the Zope ecosystem.

You use it by defining a schema that specifies what configuration keys and values are allowed, then passing configuration data through that schema for validation. It's useful when you need structured, validated configuration rather than ad-hoc parsing of raw config files.

Use it for:

- Define and enforce a schema for application configuration files to catch errors early.
- Validate user-supplied configuration data before passing it to application logic.
- Build configuration management systems that require structured, typed configuration.
- Parse and validate configuration in tools or frameworks that need strict schema compliance.
- Integrate configuration validation into Zope-based applications.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

lazr.config lets you define configuration schemas and validate configurations against them, handling parsing and processing of configuration data.

Yes, if you need declarative configuration schema validation. Low install friction, active maintenance, no known vulnerabilities, and copyleft licensing is straightforward for most projects. Install it if your application requires validated, schema-driven configuration; skip it if you're handling simple key-value configs or prefer runtime validation.

## Install

pip install lazr-config
uv add lazr-config
poetry add lazr-config

## Installing lazr.config

Before you install: Low install friction with a pure-Python wheel distribution. Active maintenance with a recent release 13 days ago. Depends on zope.interface and lazr.delegates, both established ecosystem packages.

License in practice: Licensed under LGPL v3 (copyleft). You may use this package freely, but any modifications you distribute must also be released under LGPL v3 or a compatible license, and you must make source code available to recipients.

Quickstart:

pip install lazr-config

from lazr.config import ConfigSchema

schema = ConfigSchema()
# Define and validate configuration

Requires Python 3.8 or later.

Verify before relying:

- Whether the package is actively maintained beyond the recent release (repository metadata unavailable).
- Real-world usage patterns and what the monthly download volume reflects about adoption.

## Package facts

- License: LGPL v3 (copyleft)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 661.0K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

configuration schema validation, config file parsing and validation, declarative configuration schemas, configuration processing library, config validation framework, structured configuration management, configuration schema definition, configuration-management, schema-validation

[View on SkillFed](https://skillfed.io/packages/lazr-config) · [View on PyPI](https://pypi.org/project/lazr-config/)