OVOS Number Parser

OVOS Number Parser is a tool for extracting, pronouncing, and detecting numbers from text across multiple languages. It supports functionalities like converting numbers to their spoken forms, extracting numbers from text, identifying fractional and ordinal numbers, and more.

Features

Pronounce Numbers: Converts numerical values to their spoken forms.
Pronounce Ordinals: Converts numbers to their ordinal forms.
Extract Numbers: Extracts numbers from textual inputs.
Detect Fractions: Identifies fractional expressions.
Detect Ordinals: Checks if a text input contains an ordinal number.

Supported Languages

✅ - supported
❌ - not supported
🚧 - imperfect placeholder, usually a language agnostic implementation or external library

Language Code	Pronounce Number	Pronounce Ordinal	Extract Number	numbers_to_digits
`en` (English)	✅	🚧	✅	✅
`az` (Azerbaijani)	✅	🚧	✅	✅
`ca` (Catalan)	✅	🚧	✅	🚧
`gl` (Galician)	✅	❌	✅	🚧
`cs` (Czech)	✅	🚧	✅	✅
`da` (Danish)	✅	✅	✅	🚧
`de` (German)	✅	✅	✅	✅
`es` (Spanish)	✅	🚧	✅	🚧
`eu` (Euskara / Basque)	✅	❌	✅	❌
`fa` (Farsi / Persian)	✅	🚧	✅	❌
`fr` (French)	✅	🚧	✅	❌
`hu` (Hungarian)	✅	✅	❌	❌
`it` (Italian)	✅	🚧	✅	❌
`kab` (Kabyle)	✅	✅	✅	🚧
`nl` (Dutch)	✅	✅	✅	✅
`pl` (Polish)	✅	🚧	✅	✅
`pt` (Portuguese)	✅	✅	✅	✅
`mwl` (Mirandese)	✅	✅	✅	✅
`ast` (Asturian)	✅	✅	✅	✅
`ru` (Russian)	✅	🚧	✅	✅
`sv` (Swedish)	✅	✅	✅	❌
`sl` (Slovenian)	✅	🚧	❌	❌
`uk` (Ukrainian)	✅	🚧	✅	✅

💡 If a language is not implemented for pronounce_number or pronounce_ordinal then unicode-rbnf will be used as a fallback

Installation

To install OVOS Number Parser, use:

pip install ovos-number-parser

Usage

from ovos_number_parser import (pronounce_number, pronounce_ordinal,
                                extract_number, is_fractional, is_ordinal,
                                numbers_to_digits)

pronounce_number(123, "en")            # 'one hundred and twenty three'
pronounce_number(4.5, "pt")            # 'quatro vírgula cinco'
pronounce_number(21, "de")             # 'einundzwanzig'
pronounce_number(3, "en", ordinals=True)  # 'third'
pronounce_ordinal(5, "de")             # 'fünfte'

extract_number("set a timer for twenty one minutes", "en")   # 21
extract_number("one hundred and one dalmatians", "en")       # 101
extract_number("dos mil veintitrés", "es")                   # 2023
extract_number("einundzwanzig Katzen", "de")                 # 21
extract_number("hello world", "en")                          # False

is_fractional("half", "en")            # 0.5
is_ordinal("third", "en")              # 3

numbers_to_digits("set a timer for five minutes", "en")
# 'set a timer for 5 minutes'

Grammatical gender is supported for languages that inflect numerals:

from ovos_number_parser.util import GrammaticalGender

pronounce_number(2, "pt", gender=GrammaticalGender.FEMININE)  # 'duas'

Documentation

API reference — every public function and its parameters
Language notes — per-language behaviour and known gaps
Adding a language — implementation guide
examples/ — runnable example scripts

Related Projects

ovos-date-parser - for handling dates and times
ovos-lang-parser - for handling languages
ovos-color-parser - for handling colors

License

This project is licensed under the Apache License 2.0.

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