confuse
Painless YAML config files
Decision gist · record as of 2026-08-14
Yes. Confuse is actively maintained, has no known vulnerabilities, installs with minimal friction, and solves a common problem (configuration management) with a clean API. It's suitable for any Python application that needs to read YAML config files with validation and layering. The MIT license poses no restrictions.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low install friction with only two runtime dependencies (pyyaml and typing_extensions).
- The project is actively maintained with a recent release 26 days ago and steady repository activity since its initial release in 2015.
License · maintenance · safety
MIT (permissive) — MIT license (permissive) means you can use this freely in commercial and private projects with minimal restrictions, requiring only attribution.
last release 2026-07-19 (26 days) · last repo commit 2026-07-19 · 425 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,657,496 downloads/mo, #3,677 on PyPI
Alternatives
Verify before relying
pip install confuse
import confuse
config = confuse.Configuration('myapp', read=False)
config['num_goats'].get(int)- Whether the package's type validation covers all common Python types or only a subset.
- Performance characteristics when dealing with large or deeply nested configuration files.
- Whether environment variable expansion supports all standard shell syntax.
What it is and what it does
Confuse is a configuration library that wraps YAML files with a validation and layering system. It lets you read configuration from multiple sources—built-in defaults, system-wide files, user-specific overrides, environment variables, and command-line arguments—and merge them into a single validated configuration object. The library handles the boilerplate of type checking, file location discovery across different operating systems, and human-readable error messages.
You use it by creating a Configuration object, then accessing values through a dictionary-like API that validates types on retrieval. For example, `config['num_goats'].get(int)` fetches the value and ensures it's an integer. It integrates with argparse and optparse from the standard library, supports environment variable substitution with automatic type conversion, and knows where to look for config files on Unix, macOS, and Windows without you having to write platform-specific code.
Use it for
- Build a CLI tool that reads user settings from ~/.config on Unix or %APPDATA% on Windows without platform-specific logic.
- Layer application defaults with user overrides and command-line flags, where each layer can be specified as YAML.
- Validate that configuration values are the correct type (integer, string, list, etc.) and provide clear error messages when they aren't.
- Support environment variable configuration for containerized or cloud-deployed applications with automatic type conversion.
- Initialize a default configuration file on first run using an in-package YAML template.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Confuse is actively maintained, has no known vulnerabilities, installs with minimal friction, and solves a common problem (configuration management) with a clean API. It's suitable for any Python application that needs to read YAML config files with validation and layering. The MIT license poses no restrictions.
Install
confuse on PyPI
Before you install
Low install friction with only two runtime dependencies (pyyaml and typing_extensions). The project is actively maintained with a recent release 26 days ago and steady repository activity since its initial release in 2015.
Requires Python 3.10 or later.
License in practice
MIT license (permissive) means you can use this freely in commercial and private projects with minimal restrictions, requiring only attribution.
Quickstart
pip install confuse
import confuse
config = confuse.Configuration('myapp', read=False)
config['num_goats'].get(int)Verify before relying
- Whether the package's type validation covers all common Python types or only a subset.
- Performance characteristics when dealing with large or deeply nested configuration files.
- Whether environment variable expansion supports all standard shell syntax.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagespyyamltyping_extensions |
| Maintenance | Actively maintained 26 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,657,496 / month, #3,677 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Intended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14 |
Evidence: confuse-2.2.1-py3-none-any.whl
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See also yaml-config · config-parser · sconf · configurator · yacs · pyaml-env · lib-layered-config · ConfigArgParse · donfig · PyYAML