https://github.com/static-frame/arraykit

Python C Extensions for StaticFrame

https://github.com/static-frame/arraykit

Repository

Python C Extensions for StaticFrame

README.rst

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arraykit
=============

The ArrayKit library provides utilities for creating and transforming NumPy arrays, implementing performance-critical StaticFrame operations as Python C extensions.

Code: https://github.com/InvestmentSystems/arraykit

Packages: https://pypi.org/project/arraykit


Dependencies
--------------

ArrayKit requires the following:

- Python>=3.10
- numpy>=1.24.3


What is New in ArrayKit
-------------------------


1.1.0
............

Now building free-threaded compatible wheels for Python 3.13.

Added ``is_objectable()`` and ``is_objectable_dt64()``.

Added ``astype_array()``.


1.0.9
............

Updated types in ``pyi`` file.


1.0.8
............

NumPy ``datetime64`` scalar lookups in ``AutoMap`` and ``FrozenAutoMap`` explicitly require matching units.


1.0.7
............

Updated build configuration.


1.0.6
............

Updated build configuration.


1.0.5
............

Updated build configuration.


1.0.4
............

Updated build configuration.


1.0.3
............

Updated build configuration.


1.0.2
............

Updated build configuration.


1.0.1
............

Updated build configuration.


1.0.0
............

Integrated ``AutoMap`` and ``FrozenAutoMap`` from ``arraymap``.

Removed global integer cache from  ``AutoMap`` and ``FrozenAutoMap`` for thread safety.


0.10.0
............

Now building wheels for Python 3.13.


0.9.0
............

Added ``TriMap.map_merge()``.


0.8.3
............

Corrected incorrect component of ``_TLabel`` in ``__init__.pyi``.


0.8.2
............

Updated build configuration.


0.8.1
............

Updated build configuration.


0.8.0
............

Now building with NumPy 2.0.


0.7.2
............

Improved ``array_to_tuple_array()`` and ``array_to_tuple_iter()`` to preserve ``tuple`` in 1D arrays.


0.7.1
............

Extended ``array_to_tuple_array()`` and ``array_to_tuple_iter()`` to support 1D arrays.


0.7.0
............

Added ``array_to_tuple_array()``.

Added ``array_to_tuple_iter()``.


0.6.3
............

Optimized memory allocation strategy for ``nonzero_1d()``.


0.6.2
............

Extended ``nonzero_1d()`` to support non-contiguous arrays.

Optimizations to ``TriMap`` when mapping to object and flexible dtypes.


0.6.1
............

Enhancements and optimizations to ``TriMap``.

Added ``nonzero_1d()``.


0.6.0
............

Added ``TriMap`` utility class for join optimization.


0.5.1
............

Restored functional wheels for Mac OS ``x86_64``.


0.5.0
............

Now building wheels for 3.12.

Now building functional wheels for Mac OS ``arm64`` / Apple Silicon.


0.4.11
............

Updated types in ``pyi`` file.


0.4.10
............

Updated types in ``pyi`` file.

Minimum supported Python set to 3.8.

Minimum supported NumPy set to 1.19.5.


0.4.9
............

Improved performance of ``first_true_1d()`` and ``first_true_2d()``.


0.4.8
............

Restored behavior of ``Blockndex.rows`` to return -1 when ``BlockIndex`` has zero rows.


0.4.7
............

Added ``BlockIndex.iter_block()``.

Corrected issue in ``BlockIndex.shape`` when the ``BlockIndex`` has zero rows.


0.4.6
............

Corrected handling of empty selections in ``BlockIndex.iter_contiguous()``.


0.4.5
............

Corrected handling of ``ascending`` in ``BlockIndex.iter_contiguous()`` with Boolean arrays.


0.4.4
............

Corrected deallocation routines in ``BlockIndex.iter_contiguous()``.


0.4.3
............

Added ``BlockIndex.iter_contiguous()`` with options for ``ascending`` and ``reduce`` sequences.


0.4.2
............

Added ``slice_to_ascending_slice()``.

Updated ``BlockIndex.shape`` to internally cache the shape tuple.

Corrected ``BlockIndex.iter_select()`` handling of negative integers in sequences.


0.4.1
............

Updated ``BlockIndex.register()`` to handle 0-column 2D arrays and return False.

Added ``BlockIndex.rows``, ``BlockIndex.columns`` properties.

Updated unset ``BlockIndex.dtype`` to return a float dtype.


0.4.0
............

Added ``BlockIndex``, a tool to be used by ``TypeBlocks`` for mapping realized column positions to arrays.

Corrected potential issue in ``AK_CPL_resize_buffer`` that could segfault for very large offsets.


0.3.4
............

Simplified implementation of ``NaTType`` identification in ``isna_element()``.


0.3.3
............

Corrected potential memory leak in ``isna_element()``.


0.3.2
............

Optimization to ``delimited_to_arrays()`` character reading per line.


0.3.1
............

Improvements to ``delimited_to_arrays()``, including proper loading of ``float16`` types.

Extended ``deepcopy_array()`` to permit ``memo`` as None.

Corrected all compiler warnings on Windows.


0.3.0
............

Added ``first_true_1d()``, ``first_true_2d()``. Added tools for performance graphing.


0.2.9
............

Corrected segmentation fault resulting from attempting to parse invalid ``datetime64`` strings in ``AK_CPL_to_array_via_cast``.


0.2.8
............

Added ``include_none`` argument to ``isna_element()``; implemented identification of Pandas pd.Timestamp NaT.


0.2.7
............

Updated most-recent NumPy references to 1.23.5.


0.2.6
............

Maintenance release.


0.2.5
............

Optimization to numerical array creation in ``delimited_to_arrays()``.


0.2.4
............

Set NumPy minimum version at 1.18.5.


0.2.3
............

Extended arguments to and functionality in ``split_after_count()`` to support the complete CSV dialect interface.

Now building wheels for 3.11.


0.2.2
............

Refinements to ensure typed-parsed ints are always int64 in ``delimited_to_arrays()``.


0.2.1
............

Implemented ``count_iteration``, ``split_after_count``.


0.2.0
............

Implemented ``delimited_to_arrays``, ``iterable_str_to_array_1d``.


0.1.13
............

Now building Python 3.10 wheels.


0.1.12
............

Added ``get_new_indexers_and_screen``.


0.1.10
............

Updated minimum NumPy to 1.18.5


0.1.9
............

Improvements to performance of ``array_deepcopy``.

Added ``dtype_from_element``.


0.1.8
............

Revised cross compile releases.


0.1.7
............

Added ``dtype_from_element()``.


0.1.6
............

Explicit imports in ``__init__.py`` for better static analysis.


0.1.5
............

Added ``isna_element()``.


0.1.3
............

Redesigned package structure for inclusion of ``py.typed`` and ``__init__.pyi``.

``array_deepcopy`` now accepts kwargs and makes the ``memo`` dict optional.


0.1.2
..........

Maintenance release of the following interfaces:

``immutable_filter``
``mloc``
``shape_filter``
``column_2d_filter``
``column_1d_filter``
``row_1d_filter``
``array_deepcopy``
``resolve_dtype``
``resolve_dtype_iter``

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