0.7.1: Add unique option to DataFrameSchema

Enhancements

• add support for Any annotation in schema model (#594)
• add support for timezone-aware datetime strategies (#595)
• unique keyword arg: replace and deprecate allow_duplicates (#580)
• Add support for empty data type annotation in SchemaModel (#602)
• support frictionless primary keys with multiple fields (#608)

Bugfixes

• unify typing.DataFrame class definitions (#576)
• schemas with multi-index columns correctly report errors (#600)
• strategies module supports undefined checks in regex columns (#599)
• fix validation of check raising error without message (#613)

Docs Improvements

• Tutorial: docs/scaling - Bring Pandera to Spark and Dask (#588)

Repo Improvements

• use virtualenv instead of conda in ci (#578)

Dependency Changes

• remove frictionless from core pandera deps (#609)
• docs/requirements.txt pin setuptools (#611)

Contributors

🎉🎉 Big shout out to all the contributors on this release 🎉🎉

• @admackin
• @jeffzi
• @tfwillems
• @fkrull8
• @kvnkho

0.7.0: Pandera Type System Overhaul

Enhancements

• Add support for frictionless schemas (#454) [docs]
• decouple pandera and pandas dtypes (#559) [docs]
• Unify dataframe definitions to fix auto-complete #576
• Report all failure cases when coercing dtypes fails (#584)

Bugfixes

• Handle case of pandas.DataFrame with pandas.MultiIndex in pandera.error_formatters.reshape_failure_cases (#560)
• Add 'ordered.setter' decorator (#567)
• Fix decorators on classmethods (#568)
• better handling of datetime/timedelta in serialize/deserialize (#585)

Docs Improvements

• Update contributing guide ccca82f
• Add documentation build to contributing guide 361fec0
• Fix virtualenv instructions in contributing guide ed74a65
• Feature/coroutines docs (#570)
• Add frictionless documentation (#579)
• use python primitive types in docs where possible (#581)

Repo Improvements

• Add typing to un-annotated functions (#569)
• use virtualenv instead of conda in ci (#578)

Contributors

Big shout out to ✨ @mattHawthorn, @vinisalazar, @cristianmatache, @TColl, @jeffzi, @admackin, and @benkeesey ✨ for your contributions on this release 🎉🎉🎉

0.6.5: Support coroutines, regex matching on non-str column names, bugfixes

Enhancements

• Raise error if check_obj.index is MultiIndex when using pandera.Index (#483)
• support decorators for coroutines (#546)
• added py.typed and typed Series descriptor (#543)
• select non-str column names with regex=True (#551)

Bugfixes

• check decorators support non-DataFrame types (#510)
• lazy validation correctly reports all errors (#528)
• don't drop duplicates for series failure cases (#535)
• custom dataframe-level checks don't corrupt data-synthesis strategy #550

Contributors

Thanks to @jekwatt @cristianmatache @lkadin for your first-time contributions! 🎉🎉🎉

0.6.4: Support dataframe-level checks in SchemaModel Config, Bugfixes

New Features

• Allow attaching registered dataframe checks by using Config field names (#478)

Bugfixes

• alias propagation works correctly on empty subclass (#446)
• Add missing inplace arg to SchemaModel's validate (#450)
• fix check_types decorator should return results from validate (#458)
• Dataframe schemas in yaml do not require any field (#479)
• coerce=True and pandas_dtype=None should be a noop (#476)

Doc Improvement

• update documentation css to fit mobile (#447)
• add copy button to docs (#448)
• link documentation to github (#449)

Infrastructure Changes

• add bugfixes and release branches to github actions eb38173
• fix github action triggers 3191be9
• update bug report template b0db5b0
• bump cache 0ee703f
• noxfile fixes 489695d
• update pylint (#477)

0.6.3: Bugfixes, update docs

New Features

• add new method SchemaModel.to_yaml to serialize SchemaModels to yaml #428

Bugfixes

• preserve pandas extension types during validation (#443)
• Fix to_yaml serialization dropping global checks (#428) 🎉 first contribution @antonl 🎉
• fix empty data type not supported for serialization (#435)
• fix empty SchemaModel (#434)
• add doc about attributes excluded by SchemaModel (#436) @jeffzi
• fix DataFrameSchema comparison with non-DataFrameSchema (#431) @jeffzi
• schema serialization handles non-PandasDtype (#424)
• pa.Object coerce should preserve object type (#423)

Documentation

• Update documentation theme to use furo #444
• Add favicon e3540f1

0.6.2: SchemaModel and synthesis bugfixes

New Feature

• Add SchemaModel column name access through class attributes (#388) @jespercodes @jeffzi 🎉
• Parametrized PandasExtensionType types (#389) @jeffzi 🎉
• adding filter argument to strict parameter (#401) @ktroutman
• feature/341: improve str and repr methods for schemas (#413)

Bugfixes

• fix py3.6 optional + literal dtypes in SchemaModel (#379) @jeffzi 🎉
• Fix minimally required packaging version (#380) contribution #1️⃣ @probberechts 🎉
• prevent mypy Check getattr error for registered checks 920a98c
• Compatibility with numpy 1.20 (#395) @jeffzi
• dataframe strategies can generate regex columns (#402)
• bugfix: df data synthesis with size=None, fix CI (#410)
• bugfix: SeriesSchema raises SchemaErrors on lazy validation (#412)

Repo Improvements

• improvements to local CI (#409) @jeffzi
• feature/414: improve contributing docs and add to sphinx docs (#416)

0.6.1: coercion and required column bugfixes

Bugfix Release

This release contains two bugfixes:

• coerce nullable str column handles all na (#366)
• non-required columns that are not in dataframe are not coerced (#368)

0.6.0: Data Synthesis Strategies, Schema Enhancements

🎉🎉🎉 Thanks to @jeffzi, @ktroutman, @m1so for your contributions! 🎉🎉🎉

Enhancements

• Improve memory efficiency of validation process (#360)
• Add column order validation (#352)
• Implement data synthesis strategies using hypothesis (#344)
• Add support for aliases in SchemaModel (#329)
• Add support for optional name validation of single-index (#326)
• Move columns to multiindex: add reset_index, set_index method to DataFrameSchema (#319)
• Add support for Python 3.9 (#307)

Bugfixes

• typing.DataFrame should expect annotation input (#318)

Deprecations

• SchemaErrors.schema_errors has been changed to failure_cases, and the schema_errors attribute now contains a list of dicts containing schema errors and reason codes. This is a breaking change, but is a minor part of the API and is fairly straightforward to fix (#360).

Documentation Improvements

• Add required columns documentation for schema models (#362)
• Fix docs: schema examples (#347)
• Add documentation for dataframeschema transformations (#333)
• Fix deprecated SchemaErrorReport references in docs (#310)
• Fix SchemaModel dtype example (#309)

Repo Improvements

• Update logo 69c6e56
• Add flynt to pre-commit hooks (#325)
• Use generic zenodo link for citation information c4f4fe7

0.5.1: bugfix - add packaging dependency

pandera relied on the packaging package to get version information to determine pandas legacy status. This was an implicit sub-dependency of one of pandera's dependencies, which was apparently dropped and led to a bug: #335. This bugfix version explicitly adds packaging.

0.5.0: Class-based API for DataFrame Typing

Enhancements

• Implement class-based API for pydantic-style schema definitions 786b504. Big thanks to @jeffzi 🎉
• Add inplace=False argument to schema.validate method to prevent mutation of original dataframe 586ebf3.
• Make pandera optional extensions [hypothesis], [io], [all] available c4716a0. Thanks @amitripshtos and @jeffzi 🎉
• Add support for complex number data types 50e86e4 thanks @ferhah 🎉
• Add support for numpy scalar types a519db5
• Add check_io decorator for check inputs and outputs of a function 913cbd7
• Throw SchemaError with column name instead of ValueError for nulls in int series f7b03e3 thanks @TheCleric 🎉

Bugfixes

• Bugfix io.to_script and to_yaml: Ignoring serializing Checks with lambda functions da9c3a5 thanks @ferhah 🎉

Deprecations

• Drop support for Python 3.5 91e21a2
• Deprecate transformers argument in DataFrameSchema init 89c3c91

Documentation Improvements

• Fix incorrect docstring 47bc7b8, thanks @areeh 🎉

Repo Improvements

• Update contributing guide 3c4589d
• Add funding page be23c4e