CHANGELOG.rst

Changelog

[3.14.5] - 2026-08-07

Fixed

• fix release ci attempting to upload a pyodide wheel

[3.14.4] - 2026-04-06

Added

• add risc64 wheels
• add support for taskflow 4.0.0

Changed

• upgrade to Cython==3.2.4.

Fixed

• fix type hints for extractOne when no score_cutoff is provided

[3.14.3] - 2025-11-01

Fixed

• add missing pypy and freethreaded linux wheels

Removed

• drop s390x and ppc64le wheels since they are virtually unused and require extremly long to build under emulation

[3.14.2] - 2025-10-30

Changed

• upgrade to Cython==3.1.6
• enable free threading

[3.14.1] - 2025-09-08

Fixed

• Fully disable line tracing in release builds

[3.14.0] - 2025-08-27

Changed

• upgrade to Cython==3.1.3. This enables compilation with free threaded python.
• upgrade to rapidfuzz-cpp==3.3.3

Added

• add support for freethreaded Python
• add python 3.14 wheels

Removed

• dropped support for Python3.9
• drop 32 bit linux wheels

Fixed

• remove unused hook-dirs from pyinstaller config to fix a warning
• fixed WRatio for a length ratio of exactly 8.0

[3.13.0] - 2025-04-03

Added

• add support for arrays of type 'w'
• add support for any DTypeLike as dtype in cdist and cpdist

Changed

• upgrade to rapidfuzz-cpp==3.3.2

[3.12.2] - 2025-03-02

Added

• added wheels for pypy 3.11

Changed

• upgrade to Cython==3.0.12

[3.12.1] - 2025-01-30

Fixed

• fix version number

[3.12.0] - 2025-01-16

Changed

• generate code for fallback imports to be better parseable for tools bundling Python applications into a single binary (examples are cx-freeze and pyinstaller)

Added

• added support for taskflow 3.9.0

[3.11.0] - 2024-12-17

Performance

• improve calculation of min score inside partial_ratio so it can skip more alignments

Added

• added build support for emscripten

[3.10.1] - 2024-10-24

Fixed

• fix compilation on clang-19
• fix incorrect results in simd optimized implementation of Levenshtein and OSA on 32bit targets

Added

• added support for taskflow 3.8.0

[3.10.0] - 2024-09-21

Fixed

• drop support for Python 3.8
• switch build system to scikit-build-core

[3.9.7] - 2024-09-02

Fixed

• fix crash in cdist due to Visual Studio upgrade

[3.9.6] - 2024-08-06

Changed

• upgrade to Cython==3.0.11
• add python 3.13 wheels

[3.9.5] - 2024-07-29

Fixed

• include simd binaries in pyinstaller builds
• fix builds with setuptools 72 by upgrading scikit-build

[3.9.4] - 2024-07-02

Fixed

• fix bug in Levenshtein.editops and Levenshtein.opcodes which could lead to incorrect results and crashes for some inputs

[3.9.3] - 2024-05-31

Fixed

• fix None handling for queries in process.cdist for scorers not supporting SIMD

[3.9.2] - 2024-05-28

Fixed

• fix supported versions of taskflow in cmake to be in the range v3.3 - v3.7

[3.9.1] - 2024-05-19

Fixed

• disable AVX2 on MacOS since it did lead to illegal instructions being generated

[3.9.0] - 2024-05-02

Changed

• significantly improve type hints for the library

Fixed

• fix cmake version parsing

[3.8.1] - 2024-04-07

Fixed

• use the correct version of rapidfuzz-cpp when building against a system installed version

[3.8.0] - 2024-04-06

Added

• added process.cpdist which allows pairwise comparison of two collection of inputs

Fixed

• fix some minor errors in the type hints
• fix potentially incorrect results of JaroWinkler when using high prefix weights

[3.7.0] - 2024-03-21

Changed

• reduce importtime

[3.6.2] - 2024-03-05

Changed

• upgrade to Cython==3.0.9

Fixed

• upgrade rapidfuzz-cpp which includes a fix for build issues on some compilers
• fix some issues with the sphinx config

[3.6.1] - 2023-12-28

Fixed

• fix overflow error on systems with sizeof(size_t) < 8

[3.6.0] - 2023-12-26

Fixed

• fix pure python fallback implementation of fuzz.token_set_ratio
• properly link with -latomic if std::atomic<uint64_t> is not natively supported

Performance

• add banded implementation of LCS / Indel. This improves the runtime from O((|s1|/64) * |s2|) to O((score_cutoff/64) * |s2|)

Changed

• upgrade to Cython==3.0.7
• cdist for many metrics now returns a matrix of uint32 instead of int32 by default

[3.5.2] - 2023-11-02

Fixed

• use _mm_malloc/_mm_free on macOS if aligned_alloc is unsupported

[3.5.1] - 2023-10-31

Fixed

• fix compilation failure on macOS

[3.5.0] - 2023-10-31

Changed

• skip pandas pd.NA similar to None
• add score_multiplier argument to process.cdist which allows multiplying the end result scores with a constant factor.
• drop support for Python 3.7

Performance

• improve performance of simd implementation for LCS / Indel / Jaro / JaroWinkler
• improve performance of Jaro and Jaro Winkler for long sequences
• implement process.extract with limit=1 using process.extractOne which can be faster

Fixed

• the preprocessing function was always called through Python due to a broken C-API version check
• fix wraparound issue in simd implementation of Jaro and Jaro Winkler

[3.4.0] - 2023-10-09

Changed

• upgrade to Cython==3.0.3
• add simd implementation for Jaro and Jaro Winkler

[3.3.1] - 2023-09-25

Added

• add missing tag for python 3.12 support

[3.3.0] - 2023-09-11

Changed

• upgrade to Cython==3.0.2
• implement the remaining missing features from the C++ implementation in the pure Python implementation

Added

• added support for Python 3.12

[3.2.0] - 2023-08-02

Changed

• build x86 with sse2/avx2 runtime detection

[3.1.2] - 2023-07-19

Changed

• upgrade to Cython==3.0.0

[3.1.1] - 2023-06-06

Changed

• upgrade to taskflow==3.6

Fixed

• replace usage of isnan with std::isnan which fixes the build on NetBSD

[3.1.0] - 2023-06-02

Changed

• added keyword argument pad to Hamming distance. This controls whether sequences of different length should be padded or lead to a ValueError
• improve consistency of exception messages between the C++ and pure Python implementation
• upgrade required Cython version to Cython==3.0.0b3

Fixed

• fix missing GIL restore when an exception is thrown inside process.cdist
• fix incorrect type hints for the process module

[3.0.0] - 2023-04-16

Changed

• allow the usage of Hamming for different string lengths. Length differences are handled as insertions / deletions
• remove support for boolean preprocessor functions in rapidfuzz.fuzz and rapidfuzz.process. The processor argument is now always a callable or None.
• update defaults of the processor argument to be None everywhere. For affected functions this can change results, since strings are no longer preprocessed. To get back the old behaviour pass processor=utils.default_process to these functions. The following functions are affected by this:
  • process.extract, process.extract_iter, process.extractOne
  • fuzz.token_sort_ratio, fuzz.token_set_ratio, fuzz.token_ratio, fuzz.partial_token_sort_ratio, fuzz.partial_token_set_ratio, fuzz.partial_token_ratio, fuzz.WRatio, fuzz.QRatio
• rapidfuzz.process no longer calls scorers with processor=None. For this reason user provided scorers no longer require this argument.
• remove option to pass keyword arguments to scorer via **kwargs in rapidfuzz.process. They can be passed via a scorer_kwargs argument now. This ensures this does not break when extending function parameters and prevents naming clashes.
• remove rapidfuzz.string_metric module. Replacements for all functions are available in rapidfuzz.distance

Added

• added support for arbitrary hashable sequence in the pure Python fallback implementation of all functions in rapidfuzz.distance
• added support for None and float("nan") in process.cdist as long as the underlying scorer supports it. This is the case for all scorers returning normalized results.

Fixed

• fix division by zero in simd implementation of normalized metrics leading to incorrect results

[2.15.1] - 2023-04-11

Fixed

• fix incorrect tag dispatching implementation leading to AVX2 instructions in the SSE2 code path

Added

• add wheels for windows arm64

[2.15.0] - 2023-04-01

Changed

• allow the usage of finite generators as choices in process.extract

[2.14.0] - 2023-03-31

Changed

• upgrade required Cython version to Cython==3.0.0b2

Fixed

• fix handling of non symmetric scorers in pure python version of process.cdist
• fix default dtype handling when using process.cdist with pure python scorers

[2.13.7] - 2022-12-20

Fixed

• fix function signature of get_requires_for_build_wheel

[2.13.6] - 2022-12-11

Changed

• reformat changelog as restructured text to get rig of m2r2 dependency

[2.13.5] - 2022-12-11

Added

• added docs to sdist

Fixed

• fix two cases of undefined behavior in process.cdist

[2.13.4] - 2022-12-08

Changed

• handle float("nan") similar to None for query / choice, since this is common for non-existent data in tools like numpy

Fixed

• fix handling on None/float("nan") in process.distance
• use absolute imports inside tests

[2.13.3] - 2022-12-03

Fixed

• improve handling of functions wrapped using functools.wraps
• fix broken fallback to Python implementation when the a ImportError occurs on import. This can e.g. occur when the binary has a dependency on libatomic, but it is unavailable on the system
• define CMAKE_C_COMPILER_AR/CMAKE_CXX_COMPILER_AR/CMAKE_C_COMPILER_RANLIB/CMAKE_CXX_COMPILER_RANLIB if they are not defined yet

[2.13.2] - 2022-11-05

Fixed

• fix incorrect results in Hamming.normalized_similarity
• fix incorrect score_cutoff handling in pure python implementation of Postfix.normalized_distance and Prefix.normalized_distance
• fix Levenshtein.normalized_similarity and Levenshtein.normalized_distance when used in combination with the process module
• fuzz.partial_ratio was not always symmetric when len(s1) == len(s2)

[2.13.1] - 2022-11-02

Fixed

• fix bug in normalized_similarity of most scorers, leading to incorrect results when used in combination with the process module
• fix sse2 support
• fix bug in JaroWinkler and Jaro when used in the pure python process module
• forward kwargs in pure Python implementation of process.extract

[2.13.0] - 2022-10-30

Fixed

• fix bug in Levenshtein.editops leading to crashes when used with score_hint

Changed

• moved capi from rapidfuzz_capi into rapidfuzz, since it will always succeed the installation now that there is a pure Python mode
• add score_hint argument to process module
• add score_hint argument to Levenshtein module

[2.12.0] - 2022-10-24

Changed

• drop support for Python 3.6

Added

• added Prefix/Suffix similarity

Fixed

• fixed packaging with pyinstaller

[2.11.1] - 2022-10-05

Fixed

• Fix segmentation fault in process.cdist when used with an empty query sequence

[2.11.0] - 2022-10-02

Changes

• move jarowinkler dependency into rapidfuzz to simplify maintenance

Performance

• add SIMD implementation for fuzz.ratio/fuzz.QRatio/Levenshtein/Indel/LCSseq/OSA to improve performance for short strings in cdist

[2.10.3] - 2022-09-30

Fixed

• use scikit-build=0.14.1 on Linux, since scikit-build=0.15.0 fails to find the Python Interpreter
• workaround gcc in bug in template type deduction

[2.10.2] - 2022-09-27

Fixed

• fix support for cmake versions below 3.17

[2.10.1] - 2022-09-25

Changed

• modernize cmake build to fix most conda-forge builds

[2.10.0] - 2022-09-18

Added

• add editops to hamming distance

Performance

• strip common affix in osa distance

Fixed

• ignore missing pandas in Python 3.11 tests

[2.9.0] - 2022-09-16

Added

• add optimal string alignment (OSA)

[2.8.0] - 2022-09-11

Fixed

• fuzz.partial_ratio did not find the optimal alignment in some edge cases (#219)

Performance

• improve performance of fuzz.partial_ratio

Changed

• increased minimum C++ version to C++17 (see #255)

[2.7.0] - 2022-09-11

Performance

• improve performance of Levenshtein.distance/Levenshtein.editops for long sequences.

Added

• add score_hint parameter to Levenshtein.editops which allows the use of a faster implementation

Changed

• all functions in the string_metric module do now raise a deprecation warning. They are now only wrappers for their replacement functions, which makes them slower when used with the process module

[2.6.1] - 2022-09-03

Fixed

• fix incorrect results of partial_ratio for long needles (#257)

[2.6.0] - 2022-08-20

Fixed

• fix hashing for custom classes

Added

• add support for slicing in Editops.__getitem__/Editops.__delitem__
• add DamerauLevenshtein module

[2.5.0] - 2022-08-14

Added

• added support for KeyboardInterrupt in processor module It might still take a bit until the KeyboardInterrupt is registered, but no longer runs all text comparisons after pressing Ctrl + C

Fixed

• fix default scorer used by cdist to use C++ implementation if possible

[2.4.4] - 2022-08-12

Changed

• Added support for Python 3.11

[2.4.3] - 2022-08-08

Fixed

• fix value range of jaro_similarity/jaro_winkler_similarity in the pure Python mode for the string_metric module
• fix missing atomix symbol on arm 32 bit

[2.4.2] - 2022-07-30

Fixed

• add missing symbol to pure Python which made the usage impossible

[2.4.1] - 2022-07-29

Fixed

• fix version number

[2.4.0] - 2022-07-29

Fixed

• fix banded Levenshtein implementation

Performance

• improve performance and memory usage of Levenshtein.editops
  • memory usage is reduced from O(NM) to O(N)
  • performance is improved for long sequences

[2.3.0] - 2022-07-23

Added

• add as_matching_blocks to Editops/Opcodes
• add support for deletions from Editops
• add Editops.apply/Opcodes.apply
• add Editops.remove_subsequence

Changed

• merge adjacent similar blocks in Opcodes

Fixed

• fix usage of eval(repr(Editop)), eval(repr(Editops)), eval(repr(Opcode)) and eval(repr(Opcodes))
• fix opcode conversion for empty source sequence
• fix validation for empty Opcode list passed into Opcodes.__init__

[2.2.0] - 2022-07-19

Changed

• added in-tree build backend to install cmake and ninja only when it is not installed yet and only when wheels are available

[2.1.4] - 2022-07-17

Changed

• changed internal implementation of cdist to remove build dependency to numpy

Added

• added wheels for musllinux and manylinux ppc64le, s390x

[2.1.3] - 2022-07-09

Fixed

• fix missing type stubs

[2.1.2] - 2022-07-04

Changed

• change src layout to make package import from root directory possible

[2.1.1] - 2022-06-30

Changed

• allow installation without the C++ extension if it fails to compile
• allow selection of implementation via the environment variable RAPIDFUZZ_IMPLEMENTATION which can be set to "cpp" or "python"

[2.1.0] - 2022-06-29

Added

• added pure python fallback for all implementations with the following exceptions:
  • no support for sequences of hashables. Only strings supported so far
  • \*.editops / \*.opcodes functions not implemented yet
  • process.cdist does not support multithreading

Fixed

• fuzz.partial_ratio_alignment ignored the score_cutoff
• fix implementation of Hamming.normalized_similarity
• fix default score_cutoff of Hamming.similarity
• fix implementation of LCSseq.distance when used in the process module
• treat hash for -1 and -2 as different

[2.0.15] - 2022-06-24

Fixed

• fix integer wraparound in partial_ratio/partial_ratio_alignment

[2.0.14] - 2022-06-23

Fixed

• fix unlimited recursion in LCSseq when used in combination with the process module

Changed

• add fallback implementations of taskflow, rapidfuzz-cpp and jarowinkler-cpp back to wheel, since some package building systems like piwheels can't clone sources

[2.0.13] - 2022-06-22

Changed

• use system version of cmake on arm platforms, since the cmake package fails to compile

[2.0.12] - 2022-06-22

Changed

• add tests to sdist
• remove cython dependency for sdist

[2.0.11] - 2022-04-23

Changed

• relax version requirements of dependencies to simplify packaging

[2.0.10] - 2022-04-17

Fixed

• Do not include installations of jaro_winkler in wheels (regression from 2.0.7)

Changed

• Allow installation from system installed versions of rapidfuzz-cpp, jarowinkler-cpp and taskflow

Added

• Added PyPy3.9 wheels on Linux

[2.0.9] - 2022-04-07

Fixed

• Add missing Cython code in sdist
• consider float imprecision in score_cutoff (see #210)

[2.0.8] - 2022-04-07

Fixed

• fix incorrect score_cutoff handling in token_set_ratio and token_ratio

Added

• add longest common subsequence

[2.0.7] - 2022-03-13

Fixed

• Do not include installations of jaro_winkler and taskflow in wheels

[2.0.6] - 2022-03-06

Fixed

• fix incorrect population of sys.modules which lead to submodules overshadowing other imports

Changed

• moved JaroWinkler and Jaro into a separate package

[2.0.5] - 2022-02-25

Fixed

• fix signed integer overflow inside hashmap implementation

[2.0.4] - 2022-02-21

Fixed

• fix binary size increase due to debug symbols
• fix segmentation fault in Levenshtein.editops

[2.0.3] - 2022-02-18

Added

• Added fuzz.partial_ratio_alignment, which returns the result of fuzz.partial_ratio combined with the alignment this result stems from

Fixed

• Fix Indel distance returning incorrect result when using score_cutoff=1, when the strings are not equal. This affected other scorers like fuzz.WRatio, which use the Indel distance as well.

[2.0.2] - 2022-02-12

Fixed

• fix type hints
• Add back transpiled cython files to the sdist to simplify builds in package builders like FreeBSD port build or conda-forge

[2.0.1] - 2022-02-11

Fixed

• fix type hints
• Indel.normalized_similarity mistakenly used the implementation of Indel.normalized_distance

[2.0.0] - 2022-02-09

Added

• added C-Api which can be used to extend RapidFuzz from different Python modules using any programming language which allows the usage of C-Apis (C/C++/Rust)
• added new scorers in rapidfuzz.distance.*
  • port existing distances to this new api
  • add Indel distance along with the corresponding editops function

Changed

• when the result of string_metric.levenshtein or string_metric.hamming is below max they do now return max + 1 instead of -1
• Build system moved from setuptools to scikit-build
• Stop including all modules in __init__.py, since they significantly slowed down import time

Removed

• remove the rapidfuzz.levenshtein module which was deprecated in v1.0.0 and scheduled for removal in v2.0.0
• dropped support for Python2.7 and Python3.5

Deprecated

• deprecate support to specify processor in form of a boolean (will be removed in v3.0.0)
  • new functions will not get support for this in the first place
• deprecate rapidfuzz.string_metric (will be removed in v3.0.0). Similar scorers are available in rapidfuzz.distance.*

Fixed

• process.cdist did raise an exception when used with a pure python scorer

Performance

• improve performance and memory usage of rapidfuzz.string_metric.levenshtein_editops
  • memory usage is reduced by 33%
  • performance is improved by around 10%-20%
• significantly improve performance of rapidfuzz.string_metric.levenshtein for max <= 31 using a banded implementation

[1.9.1] - 2021-12-13

Fixed

• fix bug in new editops implementation, causing it to SegFault on some inputs (see qurator-spk/dinglehopper#64)

[1.9.0] - 2021-12-11

Fixed

• Fix some issues in the type annotations (see #163)

Performance

• improve performance and memory usage of rapidfuzz.string_metric.levenshtein_editops
  • memory usage is reduced by 10x
  • performance is improved from O(N * M) to O([N / 64] * M)

[1.8.3] - 2021-11-19

Added

• Added missing wheels for Python3.6 on MacOs and Windows (see #159)

[1.8.2] - 2021-10-27

Added

• Add wheels for Python 3.10 on MacOs

[1.8.1] - 2021-10-22

Fixed

• Fix incorrect editops results (See #148)

[1.8.0] - 2021-10-20

Changed

• Add Wheels for Python3.10 on all platforms except MacOs (see #141)
• Improve performance of string_metric.jaro_similarity and string_metric.jaro_winkler_similarity for strings with a length <= 64

[1.7.1] - 2021-10-02

Fixed

• fixed incorrect results of fuzz.partial_ratio for long needles (see #138)

[1.7.0] - 2021-09-27

Changed

• Added typing for process.cdist
• Added multithreading support to cdist using the argument process.cdist
• Add dtype argument to process.cdist to set the dtype of the result numpy array (see #132)
• Use a better hash collision strategy in the internal hashmap, which improves the worst case performance

[1.6.2] - 2021-09-15

Changed

• improved performance of fuzz.ratio
• only import process.cdist when numpy is available

[1.6.1] - 2021-09-11

Changed

• Add back wheels for Python2.7

[1.6.0] - 2021-09-10

Changed

• fuzz.partial_ratio uses a new implementation for short needles (<= 64). This implementation is
  • more accurate than the current implementation (it is guaranteed to find the optimal alignment)
  • it is significantly faster
• Add process.cdist to compare all elements of two lists (see #51)

[1.5.1] - 2021-09-01

Fixed

• Fix out of bounds access in levenshtein_editops

[1.5.0] - 2021-08-21

Changed

• all scorers do now support similarity/distance calculations between any sequence of hashables. So it is possible to calculate e.g. the WER as: .. code-block:

  >>> string_metric.levenshtein(["word1", "word2"], ["word1", "word3"])
  1
  

Added

• Added type stub files for all functions
• added jaro similarity in string_metric.jaro_similarity
• added jaro winkler similarity in string_metric.jaro_winkler_similarity
• added Levenshtein editops in string_metric.levenshtein_editops

Fixed

• Fixed support for set objects in process.extract
• Fixed inconsistent handling of empty strings

[1.4.1] - 2021-03-30

Performance

• improved performance of result creation in process.extract

Fixed

• Cython ABI stability issue (#95)
• fix missing decref in case of exceptions in process.extract

[1.4.0] - 2021-03-29

Changed

• added processor support to levenshtein and hamming
• added distance support to extract/extractOne/extract_iter

Fixed

• incorrect results of normalized_hamming and normalized_levenshtein when used with utils.default_process as processor

[1.3.3] - 2021-03-20

Fixed

• Fix a bug in the mbleven implementation of the uniform Levenshtein distance and cover it with fuzz tests

[1.3.2] - 2021-03-20

Fixed

• some of the newly activated warnings caused build failures in the conda-forge build

[1.3.1] - 2021-03-20

Fixed

• Fixed issue in LCS calculation for partial_ratio (see #90)
• Fixed incorrect results for normalized_hamming and normalized_levenshtein when the processor utils.default_process is used
• Fix many compiler warnings

[1.3.0] - 2021-03-16

Changed

• add wheels for a lot of new platforms
• drop support for Python 2.7

Performance

• use is instead of == to compare functions directly by address

Fixed

• Fix another ref counting issue
• Fix some issues in the Levenshtein distance algorithm (see #92)

[1.2.1] - 2021-03-08

Performance

• further improve bitparallel implementation of uniform Levenshtein distance for strings with a length > 64 (in many cases more than 50% faster)

[1.2.0] - 2021-03-07

Changed

• add more benchmarks to documentation

Performance

• add bitparallel implementation to InDel Distance (Levenshtein with the weights 1,1,2) for strings with a length > 64
• improve bitparallel implementation of uniform Levenshtein distance for strings with a length > 64
• use the InDel Distance and uniform Levenshtein distance in more cases instead of the generic implementation
• Directly use the Levenshtein implementation in C++ instead of using it through Python in process.*

[1.1.2] - 2021-03-03

Fixed

• Fix reference counting in process.extract (see #81)

[1.1.1] - 2021-02-23

Fixed

• Fix result conversion in process.extract (see #79)

[1.1.0] - 2021-02-21

Changed

• string_metric.normalized_levenshtein supports now all weights
• when different weights are used for Insertion and Deletion the strings are not swapped inside the Levenshtein implementation anymore. So different weights for Insertion and Deletion are now supported.
• replace C++ implementation with a Cython implementation. This has the following advantages:
  • The implementation is less error prone, since a lot of the complex things are done by Cython
  • slightly faster than the current implementation (up to 10% for some parts)
  • about 33% smaller binary size
  • reduced compile time
• Added **kwargs argument to process.extract/extractOne/extract_iter that is passed to the scorer
• Add max argument to hamming distance
• Add support for whole Unicode range to utils.default_process

Performance

• replaced Wagner Fischer usage in the normal Levenshtein distance with a bitparallel implementation

[1.0.2] - 2021-02-19

Fixed

• The bitparallel LCS algorithm in fuzz.partial_ratio did not find the longest common substring properly in some cases. The old algorithm is used again until this bug is fixed.

[1.0.1] - 2021-02-17

Changed

• string_metric.normalized_levenshtein supports now the weights (1, 1, N) with N >= 1

Performance

• The Levenshtein distance with the weights (1, 1, >2) do now use the same implementation as the weight (1, 1, 2), since Substitution > Insertion + Deletion has no effect

Fixed

• fix uninitialized variable in bitparallel Levenshtein distance with the weight (1, 1, 1)

[1.0.0] - 2021-02-12

Changed

• all normalized string_metrics can now be used as scorer for process.extract/extractOne
• Implementation of the C++ Wrapper completely refactored to make it easier to add more scorers, processors and string matching algorithms in the future.
• increased test coverage, that already helped to fix some bugs and help to prevent regressions in the future
• improved docstrings of functions

Performance

• Added bit-parallel implementation of the Levenshtein distance for the weights (1,1,1) and (1,1,2).
• Added specialized implementation of the Levenshtein distance for cases with a small maximum edit distance, that is even faster, than the bit-parallel implementation.
• Improved performance of fuzz.partial_ratio -> Since fuzz.ratio and fuzz.partial_ratio are used in most scorers, this improves the overall performance.
• Improved performance of process.extract and process.extractOne

Deprecated

• the rapidfuzz.levenshtein module is now deprecated and will be removed in v2.0.0 These functions are now placed in rapidfuzz.string_metric. distance, normalized_distance, weighted_distance and weighted_normalized_distance are combined into levenshtein and normalized_levenshtein.

Added

• added normalized version of the hamming distance in string_metric.normalized_hamming
• process.extract_iter as a generator, that yields the similarity of all elements, that have a similarity >= score_cutoff

Fixed

• multiple bugs in extractOne when used with a scorer, that's not from RapidFuzz
• fixed bug in token_ratio
• fixed bug in result normalization causing zero division

[0.14.2] - 2020-12-31

Fixed

• utf8 usage in the copyright header caused problems with python2.7 on some platforms (see #70)

[0.14.1] - 2020-12-13

Fixed

• when a custom processor like lambda s: s was used with any of the methods inside fuzz.* it always returned a score of 100. This release fixes this and adds a better test coverage to prevent this bug in the future.

[0.14.0] - 2020-12-09

Added

• added hamming distance metric in the levenshtein module

Performance

• improved performance of default_process by using lookup table

[0.13.4] - 2020-11-30

Fixed

• Add missing virtual destructor that caused a segmentation fault on Mac Os

[0.13.3] - 2020-11-21

Added

• C++11 Support
• manylinux wheels

[0.13.2] - 2020-11-21

Fixed

• Levenshtein was not imported from __init__
• The reference count of a Python Object inside process.extractOne was decremented to early

[0.13.1] - 2020-11-17

Performance

• process.extractOne exits early when a score of 100 is found. This way the other strings do not have to be preprocessed anymore.

[0.13.0] - 2020-11-16

Fixed

• string objects passed to scorers had to be strings even before preprocessing them. This was changed, so they only have to be strings after preprocessing similar to process.extract/process.extractOne

Performance

• process.extractOne is now implemented in C++ making it a lot faster
• When token_sort_ratio or partial_token_sort ratio is used inprocess.extractOne the words in the query are only sorted once to improve the runtime

Changed

• process.extractOne/process.extract do now return the index of the match, when the choices are a list.

Removed

• process.extractIndices got removed, since the indices are now already returned by process.extractOne/process.extract

[0.12.5] - 2020-10-26

Fixed

• fix documentation of process.extractOne (see #48)

[0.12.4] - 2020-10-22

Added

• Added wheels for
  • CPython 2.7 on windows 64 bit
  • CPython 2.7 on windows 32 bit
  • PyPy 2.7 on windows 32 bit

[0.12.3] - 2020-10-09

Fixed

• fix bug in partial_ratio (see #43)

[0.12.2] - 2020-10-01

Fixed

• fix inconsistency with fuzzywuzzy in partial_ratio when using strings of equal length

[0.12.1] - 2020-09-30

Fixed

• MSVC has a bug and therefore crashed on some of the templates used. This Release simplifies the templates so compiling on msvc works again

[0.12.0] - 2020-09-30

Performance

• partial_ratio is using the Levenshtein distance now, which is a lot faster. Since many of the other algorithms use partial_ratio, this helps to improve the overall performance

[0.11.3] - 2020-09-22

Fixed

• fix partial_token_set_ratio returning 100 all the time

[0.11.2] - 2020-09-12

Added

• added rapidfuzz.__author__, rapidfuzz.__license__ and rapidfuzz.__version__

[0.11.1] - 2020-09-01

Fixed

• do not use auto junk when searching the optimal alignment for partial_ratio

[0.11.0] - 2020-08-22

Changed

• support for python 2.7 added #40
• add wheels for python2.7 (both pypy and cpython) on MacOS and Linux

[0.10.0] - 2020-08-17

Changed

• added wheels for Python3.9

Fixed

• tuple scores in process.extractOne are now supported #39