dature

PyPI Supported Python versions Documentation License
CI CodeQL Dependency Review Coverage
Monthly downloads Commits since latest release Last commit date Last release date

Documentation | Changelog

Type-safe configuration loader for Python dataclasses. Load config from YAML, JSON, TOML, INI, ENV files, environment variables, Docker secrets, CLI arguments, and HashiCorp Vault — with automatic type conversion, validation, and human-readable error messages.

Installation

pip install dature

With optional format support:

pip install dature[yaml]       # YAML (ruamel.yaml)
pip install dature[json5]      # JSON5
pip install dature[toml]       # TOML (toml_rs)
pip install dature[vault]      # HashiCorp Vault (hvac)
pip install dature[secure]     # Secret detection heuristics
pip install dature[type-stubs] # Type stubs for the integrations above (mypy/pyright users)

Quick Start

from dataclasses import dataclass

import dature


@dataclass
class Config:
    host: str
    port: int
    debug: bool = False


config = dature.load(dature.Yaml12Source(file="config.yaml"), Config)

Key Features

  • Multiple sources — YAML, JSON, JSON5, TOML, INI, ENV, environment variables, Docker secrets, CLI args (argparse), HashiCorp Vault
  • Merging — combine multiple sources with configurable strategies ("last_wins", "first_wins", "raise_on_conflict")
  • Validation — Annotated field validators, root validators, __post_init__ support
  • Naming — automatic field name mapping (snake_case ↔ camelCase ↔ UPPER_SNAKE etc.)
  • Secret masking — automatic masking in error messages and logs by field type, name, or heuristic
  • ENV expansion — $VAR, ${VAR:-default} substitution in all file formats
  • Special types — SecretStr, ByteSize, PaymentCardNumber, URL, Base64UrlStr
  • Debug report — debug=True shows which source provided each field value
  • Decorator mode — @dature.load(meta) auto-loads config on dataclass instantiation with caching

See the documentation for detailed guides and API reference.

Requirements

  • Python >= 3.12
  • adaptix >= 3.0.0b11

Development

git clone https://github.com/reagento/dature.git
cd dature
uv sync --all-extras --all-groups

Run tests:

uv run pytest tests/ -v

Lint and type check:

uv run prek run --all-files

Build docs locally:

uv run mkdocs serve

Changelog

Each PR must include a towncrier fragment in the changes/ directory:

# Format: changes/<issue-or-pr-number>.<type>
echo "Added support for YAML anchors." > changes/42.feature

Available <type> values:

Type Description
feature New features
bugfix Bug fixes
doc Documentation improvements
removal Deprecations and removals
misc Other changes

Use +<description> instead of an issue number for changes without a linked issue:

echo "Fixed typo in error message." > changes/+fix-typo.bugfix.md

Releasing

  1. Run the Release workflow and choose bump type (patch / minor / major). The next version is calculated from the latest git tag automatically.
  2. The workflow builds the changelog from fragments and creates a PR.
  3. Merge the PR — CI automatically creates the tag, publishes to PyPI, creates a GitHub Release, and updates docs.

License

Apache License 2.0

Project links

Data verified by PyPI on Aug 8, 2026
Data provided by the project maintainers, verified at the time the release was uploaded to PyPI.

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Newer release available (1.3.0)

1 maintainer

PyPI data
Data sourced directly from PyPI's database.
Avatar for Niccolum from gravatar.com Niccolum

Credits

PyPI data
Data sourced directly from PyPI's database.

Author: Niccolum

GitHub Statistics

Data verified by PyPI on Aug 8, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

Apache-2.0
View SPDX License List

Requires

Python >=3.12

Provides Extra

consul etcd json5 secure toml type-stubs vault yaml

Tags

config configuration dataclass env ini json json5 loader settings toml type-safe yaml

Classifiers

Report project as malware

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

dature-1.1.1.tar.gz (409.3 kB view details)

Uploaded Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

dature-1.1.1-py3-none-any.whl (154.3 kB view details)

Uploaded Python 3

File details

Details for the file dature-1.1.1.tar.gz.

File metadata

  • Download URL: dature-1.1.1.tar.gz
  • Upload date:
  • Size: 409.3 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? Yes
  • Uploaded via: twine/7.0.0 CPython/3.13.14

File hashes

Hashes for dature-1.1.1.tar.gz
Algorithm Hash digest
SHA256 0733236f337eb2372b8423cd105074a8c846e74180f622bafb185c46d1a74f21
MD5 d35ea92bc15ca67f24ca99ee68ef30a1
BLAKE2b-256 89bad79bac02d6fdcf95c255b3ebf59317df518728ea7086b0e04af7cbf28d43

See more details on using hashes here.

Provenance

The following attestation bundles were made for dature-1.1.1.tar.gz:

Publisher: publish.yml on reagento/dature

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

File details

Details for the file dature-1.1.1-py3-none-any.whl.

File metadata

  • Download URL: dature-1.1.1-py3-none-any.whl
  • Upload date:
  • Size: 154.3 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? Yes
  • Uploaded via: twine/7.0.0 CPython/3.13.14

File hashes

Hashes for dature-1.1.1-py3-none-any.whl
Algorithm Hash digest
SHA256 c60ff88de98b030fa717d8b477a2e72eff16e701b81c0c10124471dbc13193c7
MD5 8b3629ae7c4f2f6a152792172f4d7f29
BLAKE2b-256 40fb1fe2497153772a897c5b5200c87b025402fedeb347128afdb7fc7bed1c5a

See more details on using hashes here.

Provenance

The following attestation bundles were made for dature-1.1.1-py3-none-any.whl:

Publisher: publish.yml on reagento/dature

Attestations: Values shown here reflect the state when the release was signed and may no longer be current.

Release history Release notifications | RSS feed

1.3.0

2 files

1.2.0

2 files

This release

1.1.1 This release

2 files

1.1.0

2 files

1.0.0

2 files

0.22.4

2 files

0.22.3

2 files

0.22.2

2 files

0.22.1

2 files

0.22.0

2 files

0.21.0

2 files

0.20.0

2 files

0.19.1

2 files

0.19.0

2 files

0.18.0

2 files

0.17.1

2 files

0.17.0

2 files

0.16.0

2 files

0.15.3

2 files

0.15.2

2 files

0.15.1

2 files

0.15.0

2 files

0.14.5

2 files

0.14.4

2 files

0.14.3

2 files

0.14.2

2 files

0.14.1

2 files

0.14.0

2 files

0.13.0

2 files

0.12.4

2 files

0.12.3

2 files

0.12.2

2 files

0.12.1

2 files

0.12.0

2 files

0.11.0

2 files

0.10.1

2 files

0.10.0

2 files

0.9.1

2 files

0.8.2

2 files

0.8.1

2 files

0.8.0

2 files

0.7.1

2 files

0.7.0

2 files

0.6.0

2 files

0.5.0

2 files

0.4.0

2 files

0.2.0

2 files

0.1.0

2 files

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page