parse numbers written in natural language
Project description
number-parser is a simple library that allows you to convert numbers written in the natural language to it’s equivalent numeric forms. It currently supports cardinal numbers in the following languages - English, Hindi, Spanish, Ukrainian and Russian and ordinal numbers in English.
Installation
pip install number-parser
number-parser requires Python 3.7+.
Usage
The library provides the following common usages.
Converting numbers in-place
Identifying the numbers in a text string, converting them to corresponding numeric values while ignoring non-numeric words. This also supports ordinal number conversion (for English only).
>>> from number_parser import parse >>> parse("I have two hats and thirty seven coats") 'I have 2 hats and 37 coats' >>> parse("One, Two, Three go") '1, 2, 3 go' >>> parse("First day of year two thousand") '1 day of year 2000'
Parsing a number
Converting a single number written in words to it’s corresponding integer.
>>> from number_parser import parse_number >>> parse_number("two thousand and twenty") 2020 >>> parse_number("not_a_number")
Parsing an ordinal
Converting a single ordinal number written in words to its corresponding integer. (Support for English only)
>>> from number_parser import parse_ordinal >>> parse_ordinal("twenty third") 23 >>> parse_ordinal("seventy fifth") 75
Parsing a fraction
Converting a fractional number written in words to its corresponding integral fraction. (Support for English only)
>>> from number_parser import parse_fraction >>> parse_fraction("forty two divided by five hundred and six") '42/506' >>> parse_fraction("one over two") '1/2' >>> parse_fraction("forty two / one million") '42/1000000'
Language Support
The default language is English, you can pass the language parameter with corresponding locale for other languages. It currently supports cardinal numbers in the following languages - English, Hindi, Spanish, Ukrainian and Russian and ordinal numbers in English.
>>> from number_parser import parse, parse_number >>> parse("Hay tres gallinas y veintitrés patos", language='es') 'Hay 3 gallinas y 23 patos' >>> parse_number("चौदह लाख बत्तीस हज़ार पाँच सौ चौबीस", language='hi') 1432524
Supported cases
The library has extensive tests. Some of the supported cases are described below.
Accurately handling usage of conjunction while forming the number.
>>> parse("doscientos cincuenta y doscientos treinta y uno y doce", language='es') '250 y 231 y 12'
Handling ambiguous cases without proper separators.
>>> parse("two thousand thousand") '2000 1000' >>> parse_number("two thousand two million") 2002000000
Handling nuances in the languag ith different forms of the same number.
>>> parse_number("пятисот девяноста шести", language='ru') 596 >>> parse_number("пятистам девяноста шести", language='ru') 596 >>> parse_number("пятьсот девяносто шесть", language='ru') 596
Contributing
Source code: https://github.com/scrapinghub/number-parser
Issue tracker: https://github.com/scrapinghub/number-parser/issues
Changes
0.3.2 (2023-03-28)
Fix: - Fix import bug (#91)
0.3.1 (2023-03-22)
Improvements: - Add Python 3.10, 3.11 support (#83) - Add __version__ (#87) - Replace OrderedDict with dict (#88)
Fix: - Inconsistent white space handling around sentence separators following numbers (#76, #77)
0.3.0 (2022-10-20)
Improvements: - Added support for bigger numbers in Spanish (#43) - Added pytest flake8 (#44) - Refactored the code (#45) - Improved testing (#46) - Improved scripts (#47) - Added tests (#50, #72) - Added GitHub actions (#54, #55, #56, #57) - Added support for simple fractions (#60)
New features: - Added feature to parse numbers in Ukrainian (#79)
0.2.1 (2020-08-25)
Fix tokenization bug - Hindi
0.2.0 (2020-08-18)
Ordinal Number Support
0.1.0 (2020-07-30)
Initial release.
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