v2.8.0

Performance improvements

Significant runtime performance improvements to minimize decorator overhead:

• Eliminated repetitive Python introspection (inspect.signature) from the execution path by resolving parameters during decoration
• Vectorized validation checks (nullable and unique) across multiple columns simultaneously using Narwhals expression API (.select())
• Avoided redundant dataframe wrappers when running value checks
• Optimized the validation builder for faster pipeline setup and eliminated unused dtype resolution overhead

What's Changed

• perf: streamline runtime overhead and simplify configurations by @vertti in #189
• chore(deps): update dependency skylos to v3.4.1 by @renovate[bot] in #180
• chore(deps): update dependency uv to v0.10.6 by @renovate[bot] in #181
• chore(deps): update dependency ruff to v0.15.3 by @renovate[bot] in #185
• chore(deps): update dependency zensical to v0.0.24 by @renovate[bot] in #184
• chore(deps): update dependency dprint to v0.52.0 by @renovate[bot] in #183
• chore(deps): update dependency ruff to v0.15.4 by @renovate[bot] in #186
• chore(deps): update dependency skylos to v3.5.1 by @renovate[bot] in #182
• chore(deps): update dependency uv to v0.10.7 by @renovate[bot] in #187
• chore(deps): update dependency skylos to v3.5.2 by @renovate[bot] in #188

Full Changelog: v2.7.0...v2.8.0

v2.7.0

2.7.0

Added

• @df_in(["col1", "col2"]) shorthand: pass columns as the first positional argument
• Opt-in strict_specs mode ([tool.daffy] strict_specs = true): raises TypeError on invalid column spec keys or types instead of silently ignoring them

Changed

• Config discovery now searches pyproject.toml from the current directory up through parent directories
• Configuration caching is now keyed by current working directory for deterministic behavior across cwd changes
• Unnamed df_in now selects the first DataFrame-like argument instead of always taking the first positional argument

Full Changelog: v2.6.1...v2.7.0

v2.6.1

Changed

• Optional dependency detection now recognizes all advertised backends (Pandas, Polars, Modin, PyArrow)
• Early import failure now triggers only when none of the supported DataFrame libraries are installed
• Updated optional dependency tests and isolation docs/scripts to align with the expanded backend detection contract
• Synced API docs and README examples with current df_in/df_out/df_log signatures and built-in check names

Added

• Declared pydantic optional dependency extra so pip install 'daffy[pydantic]' matches runtime install guidance
• Added docs contract tests to detect signature/example drift in README.md and docs/api.md

Full Changelog: v2.6.0...v2.6.1

v2.6.0

What's Changed

• Update dependency uv to v0.9.25 by @renovate[bot] in #121
• Update dependency hypothesis to v6.150.2 by @renovate[bot] in #120
• Update dependency zensical to v0.0.16 by @renovate[bot] in #123
• Update dependency ruff to v0.14.12 by @renovate[bot] in #122
• Update dependency uv to v0.9.26 by @renovate[bot] in #125
• Update dependency ruff to v0.14.13 by @renovate[bot] in #124
• Fix Codecov coverage upload by @vertti in #127
• Enable Renovate to update GitHub Action digests by @vertti in #129
• Update codecov/codecov-action action to v5.5.2 by @renovate[bot] in #128
• Update jdx/mise-action digest to c53b923 by @renovate[bot] in #130
• Update dependency zensical to v0.0.17 by @renovate[bot] in #131
• Update dependency skylos to v3.1.1 by @renovate[bot] in #132
• Update jdx/mise-action digest to 6d1e696 by @renovate[bot] in #133
• Update dependency zensical to v0.0.18 by @renovate[bot] in #138
• Update dependency hypothesis to v6.150.3 by @renovate[bot] in #137
• Update dependency ruff to v0.14.14 by @renovate[bot] in #136
• Update dependency zensical to v0.0.19 by @renovate[bot] in #139
• Update dependency hypothesis to v6.151.0 by @renovate[bot] in #141
• Update dependency coverage to v7.13.2 by @renovate[bot] in #140
• Update dependency hypothesis to v6.151.1 by @renovate[bot] in #142
• Update dependency skylos to v3.1.2 by @renovate[bot] in #144
• Update dependency hypothesis to v6.151.2 by @renovate[bot] in #143
• Update dependency uv to v0.9.27 by @renovate[bot] in #145
• Add pandas 3.x support by @vertti in #146

Full Changelog: v2.5.1...v2.6.0

v2.5.1

What's Changed

• Simplify code by eliminating repetitive patterns by @vertti in #117
• Update dependency hypothesis to v6.150.1 by @renovate[bot] in #118

Full Changelog: v2.5.0...v2.5.1

v2.5.0

What's Changed

• Update dependency uv to v0.9.24 by @renovate[bot] in #111
• Update dependency skylos to v3.0.3 by @renovate[bot] in #112
• Refactor: Code cleanup and simplification by @vertti in #113
• Replace monolithic validation with composable pipeline architecture by @vertti in #114
• Remove dead code and use vulture for CI by @vertti in #115
• Release v2.5.0 - Architecture refactoring by @vertti in #116

Full Changelog: v2.4.1...v2.5.0

v2.4.1

What's Changed

• Update dependency hypothesis to v6.148.11 by @renovate[bot] in #99
• Migrate documentation from MkDocs to Zensical by @vertti in #100
• Update dependency hypothesis to v6.148.13 by @renovate[bot] in #101
• Update dependency hypothesis to v6.149.0 by @renovate[bot] in #102
• Update dependency hypothesis to v6.149.1 by @renovate[bot] in #104
• Update dependency uv to v0.9.22 by @renovate[bot] in #105
• Update dependency hypothesis to v6.150.0 by @renovate[bot] in #106
• Replace Vulture with Skylos for dead code detection by @vertti in #107
• remove leftover pydocstyle by @vertti in #108
• Enable ALL Ruff rules with selective ignores by @vertti in #110
• Update dependency ruff to v0.14.11 by @renovate[bot] in #109

Full Changelog: v2.4.0...v2.4.1

v2.4.0

What's Changed

• Harden GitHub Actions workflows based on zizmor audit by @vertti in #93
• Fix type errors reported by ty type checker by @vertti in #92
• Update dependency uv to v0.9.21 by @renovate[bot] in #94
• Add FUNDING.yml by @vertti in #96
• Add shape validation (min_rows, max_rows, exact_rows, allow_empty) by @vertti in #97
• Add test improvements from mutation testing analysis by @vertti in #98

Full Changelog: v2.3.1...v2.4.0

v2.3.1

What's Changed

• Clean up mise.toml by @vertti in #87
• Add dprint for markdown formatting by @vertti in #88
• Update dependency uv to v0.9.18 by @renovate[bot] in #89
• Update dependency uv to v0.9.20 by @renovate[bot] in #90
• Replace broken DataFrameType with narwhals IntoDataFrame by @vertti in #91

Full Changelog: v2.3.0...v2.3.1

v2.3.0

Breaking Changes

• Drops Python 3.9 support

What's Changed

• Update dependency coverage to v7.13.1 by @renovate[bot] in #77
• Replace abandoned deadcode with vulture by @vertti in #79
• Update dependency pre-commit to v4.5.1 by @renovate[bot] in #80
• Drop Python 3.9 support by @vertti in #85
• Simplify CI by using mise-action by @vertti in #84
• Use mise-action in release workflow by @vertti in #86

New Contributors

• @renovate[bot] made their first contribution in #77

Full Changelog: v2.2.0...v2.3.0