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603 lines
21 KiB
603 lines
21 KiB
10 months ago
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Metadata-Version: 2.1
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Name: inflect
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Version: 7.0.0
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Summary: Correctly generate plurals, singular nouns, ordinals, indefinite articles; convert numbers to words
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Home-page: https://github.com/jaraco/inflect
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Author: Paul Dyson
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Author-email: pwdyson@yahoo.com
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Maintainer: Jason R. Coombs
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Maintainer-email: jaraco@jaraco.com
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Intended Audience :: Developers
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Classifier: License :: OSI Approved :: MIT License
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Classifier: Programming Language :: Python :: 3
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Classifier: Programming Language :: Python :: 3 :: Only
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Classifier: Natural Language :: English
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Classifier: Operating System :: OS Independent
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Classifier: Topic :: Software Development :: Libraries :: Python Modules
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Classifier: Topic :: Text Processing :: Linguistic
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Requires-Python: >=3.8
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License-File: LICENSE
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Requires-Dist: pydantic >=1.9.1
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Requires-Dist: typing-extensions
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Provides-Extra: docs
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Requires-Dist: sphinx >=3.5 ; extra == 'docs'
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Requires-Dist: jaraco.packaging >=9 ; extra == 'docs'
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Requires-Dist: rst.linker >=1.9 ; extra == 'docs'
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Requires-Dist: furo ; extra == 'docs'
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Requires-Dist: sphinx-lint ; extra == 'docs'
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Requires-Dist: jaraco.tidelift >=1.4 ; extra == 'docs'
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Provides-Extra: testing
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Requires-Dist: pytest >=6 ; extra == 'testing'
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Requires-Dist: pytest-checkdocs >=2.4 ; extra == 'testing'
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Requires-Dist: pytest-cov ; extra == 'testing'
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Requires-Dist: pytest-enabler >=2.2 ; extra == 'testing'
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Requires-Dist: pytest-ruff ; extra == 'testing'
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Requires-Dist: pygments ; extra == 'testing'
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Requires-Dist: pytest-black >=0.3.7 ; (platform_python_implementation != "PyPy") and extra == 'testing'
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Requires-Dist: pytest-mypy >=0.9.1 ; (platform_python_implementation != "PyPy") and extra == 'testing'
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.. image:: https://img.shields.io/pypi/v/inflect.svg
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:target: https://pypi.org/project/inflect
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.. image:: https://img.shields.io/pypi/pyversions/inflect.svg
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.. image:: https://github.com/jaraco/inflect/workflows/tests/badge.svg
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:target: https://github.com/jaraco/inflect/actions?query=workflow%3A%22tests%22
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:alt: tests
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.. image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v2.json
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:target: https://github.com/astral-sh/ruff
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:alt: Ruff
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.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
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:target: https://github.com/psf/black
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:alt: Code style: Black
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.. image:: https://readthedocs.org/projects/inflect/badge/?version=latest
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:target: https://inflect.readthedocs.io/en/latest/?badge=latest
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.. image:: https://img.shields.io/badge/skeleton-2023-informational
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:target: https://blog.jaraco.com/skeleton
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.. image:: https://tidelift.com/badges/package/pypi/inflect
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:target: https://tidelift.com/subscription/pkg/pypi-inflect?utm_source=pypi-inflect&utm_medium=readme
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NAME
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====
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inflect.py - Correctly generate plurals, singular nouns, ordinals, indefinite articles; convert numbers to words.
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SYNOPSIS
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========
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.. code-block:: python
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import inflect
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p = inflect.engine()
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# METHODS:
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# plural plural_noun plural_verb plural_adj singular_noun no num
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# compare compare_nouns compare_nouns compare_adjs
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# a an
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# present_participle
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# ordinal number_to_words
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# join
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# inflect classical gender
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# defnoun defverb defadj defa defan
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# UNCONDITIONALLY FORM THE PLURAL
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print("The plural of ", word, " is ", p.plural(word))
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# CONDITIONALLY FORM THE PLURAL
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print("I saw", cat_count, p.plural("cat", cat_count))
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# FORM PLURALS FOR SPECIFIC PARTS OF SPEECH
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print(
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p.plural_noun("I", N1),
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p.plural_verb("saw", N1),
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p.plural_adj("my", N2),
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p.plural_noun("saw", N2),
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)
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# FORM THE SINGULAR OF PLURAL NOUNS
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print("The singular of ", word, " is ", p.singular_noun(word))
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# SELECT THE GENDER OF SINGULAR PRONOUNS
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print(p.singular_noun("they")) # 'it'
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p.gender("feminine")
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print(p.singular_noun("they")) # 'she'
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# DEAL WITH "0/1/N" -> "no/1/N" TRANSLATION:
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print("There ", p.plural_verb("was", errors), p.no(" error", errors))
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# USE DEFAULT COUNTS:
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print(
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p.num(N1, ""),
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p.plural("I"),
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p.plural_verb(" saw"),
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p.num(N2),
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p.plural_noun(" saw"),
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)
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print("There ", p.num(errors, ""), p.plural_verb("was"), p.no(" error"))
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# COMPARE TWO WORDS "NUMBER-INSENSITIVELY":
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if p.compare(word1, word2):
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print("same")
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if p.compare_nouns(word1, word2):
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print("same noun")
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if p.compare_verbs(word1, word2):
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print("same verb")
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if p.compare_adjs(word1, word2):
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print("same adj.")
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# ADD CORRECT "a" OR "an" FOR A GIVEN WORD:
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print("Did you want ", p.a(thing), " or ", p.an(idea))
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# CONVERT NUMERALS INTO ORDINALS (i.e. 1->1st, 2->2nd, 3->3rd, etc.)
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print("It was", p.ordinal(position), " from the left\n")
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# CONVERT NUMERALS TO WORDS (i.e. 1->"one", 101->"one hundred and one", etc.)
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# RETURNS A SINGLE STRING...
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words = p.number_to_words(1234)
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# "one thousand, two hundred and thirty-four"
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words = p.number_to_words(p.ordinal(1234))
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# "one thousand, two hundred and thirty-fourth"
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# GET BACK A LIST OF STRINGS, ONE FOR EACH "CHUNK"...
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words = p.number_to_words(1234, wantlist=True)
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# ("one thousand","two hundred and thirty-four")
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# OPTIONAL PARAMETERS CHANGE TRANSLATION:
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words = p.number_to_words(12345, group=1)
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# "one, two, three, four, five"
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words = p.number_to_words(12345, group=2)
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# "twelve, thirty-four, five"
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words = p.number_to_words(12345, group=3)
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# "one twenty-three, forty-five"
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words = p.number_to_words(1234, andword="")
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# "one thousand, two hundred thirty-four"
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words = p.number_to_words(1234, andword=", plus")
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# "one thousand, two hundred, plus thirty-four"
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# TODO: I get no comma before plus: check perl
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words = p.number_to_words(555_1202, group=1, zero="oh")
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# "five, five, five, one, two, oh, two"
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words = p.number_to_words(555_1202, group=1, one="unity")
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# "five, five, five, unity, two, oh, two"
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words = p.number_to_words(123.456, group=1, decimal="mark")
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# "one two three mark four five six"
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# TODO: DOCBUG: perl gives commas here as do I
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# LITERAL STYLE ONLY NAMES NUMBERS LESS THAN A CERTAIN THRESHOLD...
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words = p.number_to_words(9, threshold=10) # "nine"
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words = p.number_to_words(10, threshold=10) # "ten"
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words = p.number_to_words(11, threshold=10) # "11"
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words = p.number_to_words(1000, threshold=10) # "1,000"
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# JOIN WORDS INTO A LIST:
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mylist = p.join(("apple", "banana", "carrot"))
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# "apple, banana, and carrot"
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mylist = p.join(("apple", "banana"))
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# "apple and banana"
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mylist = p.join(("apple", "banana", "carrot"), final_sep="")
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# "apple, banana and carrot"
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# REQUIRE "CLASSICAL" PLURALS (EG: "focus"->"foci", "cherub"->"cherubim")
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p.classical() # USE ALL CLASSICAL PLURALS
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p.classical(all=True) # USE ALL CLASSICAL PLURALS
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p.classical(all=False) # SWITCH OFF CLASSICAL MODE
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p.classical(zero=True) # "no error" INSTEAD OF "no errors"
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p.classical(zero=False) # "no errors" INSTEAD OF "no error"
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p.classical(herd=True) # "2 buffalo" INSTEAD OF "2 buffalos"
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p.classical(herd=False) # "2 buffalos" INSTEAD OF "2 buffalo"
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p.classical(persons=True) # "2 chairpersons" INSTEAD OF "2 chairpeople"
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p.classical(persons=False) # "2 chairpeople" INSTEAD OF "2 chairpersons"
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p.classical(ancient=True) # "2 formulae" INSTEAD OF "2 formulas"
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p.classical(ancient=False) # "2 formulas" INSTEAD OF "2 formulae"
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# INTERPOLATE "plural()", "plural_noun()", "plural_verb()", "plural_adj()", "singular_noun()",
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# a()", "an()", "num()" AND "ordinal()" WITHIN STRINGS:
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print(p.inflect("The plural of {0} is plural('{0}')".format(word)))
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print(p.inflect("The singular of {0} is singular_noun('{0}')".format(word)))
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print(p.inflect("I saw {0} plural('cat',{0})".format(cat_count)))
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print(
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p.inflect(
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"plural('I',{0}) "
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"plural_verb('saw',{0}) "
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"plural('a',{1}) "
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"plural_noun('saw',{1})".format(N1, N2)
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)
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)
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print(
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p.inflect(
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"num({0}, False)plural('I') "
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"plural_verb('saw') "
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"num({1}, False)plural('a') "
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"plural_noun('saw')".format(N1, N2)
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)
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)
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print(p.inflect("I saw num({0}) plural('cat')\nnum()".format(cat_count)))
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print(p.inflect("There plural_verb('was',{0}) no('error',{0})".format(errors)))
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print(p.inflect("There num({0}, False)plural_verb('was') no('error')".format(errors)))
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print(p.inflect("Did you want a('{0}') or an('{1}')".format(thing, idea)))
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print(p.inflect("It was ordinal('{0}') from the left".format(position)))
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# ADD USER-DEFINED INFLECTIONS (OVERRIDING INBUILT RULES):
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p.defnoun("VAX", "VAXen") # SINGULAR => PLURAL
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p.defverb(
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"will", # 1ST PERSON SINGULAR
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"shall", # 1ST PERSON PLURAL
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"will", # 2ND PERSON SINGULAR
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"will", # 2ND PERSON PLURAL
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"will", # 3RD PERSON SINGULAR
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"will", # 3RD PERSON PLURAL
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)
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p.defadj("hir", "their") # SINGULAR => PLURAL
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p.defa("h") # "AY HALWAYS SEZ 'HAITCH'!"
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p.defan("horrendous.*") # "AN HORRENDOUS AFFECTATION"
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DESCRIPTION
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===========
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The methods of the class ``engine`` in module ``inflect.py`` provide plural
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inflections, singular noun inflections, "a"/"an" selection for English words,
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and manipulation of numbers as words.
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Plural forms of all nouns, most verbs, and some adjectives are
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provided. Where appropriate, "classical" variants (for example: "brother" ->
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"brethren", "dogma" -> "dogmata", etc.) are also provided.
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Single forms of nouns are also provided. The gender of singular pronouns
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can be chosen (for example "they" -> "it" or "she" or "he" or "they").
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Pronunciation-based "a"/"an" selection is provided for all English
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words, and most initialisms.
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It is also possible to inflect numerals (1,2,3) to ordinals (1st, 2nd, 3rd)
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and to English words ("one", "two", "three").
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In generating these inflections, ``inflect.py`` follows the Oxford
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English Dictionary and the guidelines in Fowler's Modern English
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Usage, preferring the former where the two disagree.
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The module is built around standard British spelling, but is designed
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to cope with common American variants as well. Slang, jargon, and
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other English dialects are *not* explicitly catered for.
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Where two or more inflected forms exist for a single word (typically a
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"classical" form and a "modern" form), ``inflect.py`` prefers the
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more common form (typically the "modern" one), unless "classical"
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processing has been specified
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(see `MODERN VS CLASSICAL INFLECTIONS`).
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FORMING PLURALS AND SINGULARS
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=============================
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Inflecting Plurals and Singulars
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--------------------------------
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All of the ``plural...`` plural inflection methods take the word to be
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inflected as their first argument and return the corresponding inflection.
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Note that all such methods expect the *singular* form of the word. The
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results of passing a plural form are undefined (and unlikely to be correct).
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Similarly, the ``si...`` singular inflection method expects the *plural*
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form of the word.
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The ``plural...`` methods also take an optional second argument,
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which indicates the grammatical "number" of the word (or of another word
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with which the word being inflected must agree). If the "number" argument is
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supplied and is not ``1`` (or ``"one"`` or ``"a"``, or some other adjective that
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implies the singular), the plural form of the word is returned. If the
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"number" argument *does* indicate singularity, the (uninflected) word
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itself is returned. If the number argument is omitted, the plural form
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is returned unconditionally.
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The ``si...`` method takes a second argument in a similar fashion. If it is
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some form of the number ``1``, or is omitted, the singular form is returned.
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Otherwise the plural is returned unaltered.
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The various methods of ``inflect.engine`` are:
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``plural_noun(word, count=None)``
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The method ``plural_noun()`` takes a *singular* English noun or
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pronoun and returns its plural. Pronouns in the nominative ("I" ->
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"we") and accusative ("me" -> "us") cases are handled, as are
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possessive pronouns ("mine" -> "ours").
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``plural_verb(word, count=None)``
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The method ``plural_verb()`` takes the *singular* form of a
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conjugated verb (that is, one which is already in the correct "person"
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and "mood") and returns the corresponding plural conjugation.
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``plural_adj(word, count=None)``
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The method ``plural_adj()`` takes the *singular* form of
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certain types of adjectives and returns the corresponding plural form.
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Adjectives that are correctly handled include: "numerical" adjectives
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("a" -> "some"), demonstrative adjectives ("this" -> "these", "that" ->
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"those"), and possessives ("my" -> "our", "cat's" -> "cats'", "child's"
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-> "childrens'", etc.)
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``plural(word, count=None)``
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The method ``plural()`` takes a *singular* English noun,
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pronoun, verb, or adjective and returns its plural form. Where a word
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has more than one inflection depending on its part of speech (for
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example, the noun "thought" inflects to "thoughts", the verb "thought"
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to "thought"), the (singular) noun sense is preferred to the (singular)
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verb sense.
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Hence ``plural("knife")`` will return "knives" ("knife" having been treated
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as a singular noun), whereas ``plural("knifes")`` will return "knife"
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("knifes" having been treated as a 3rd person singular verb).
|
||
|
|
||
|
The inherent ambiguity of such cases suggests that,
|
||
|
where the part of speech is known, ``plural_noun``, ``plural_verb``, and
|
||
|
``plural_adj`` should be used in preference to ``plural``.
|
||
|
|
||
|
|
||
|
``singular_noun(word, count=None)``
|
||
|
|
||
|
The method ``singular_noun()`` takes a *plural* English noun or
|
||
|
pronoun and returns its singular. Pronouns in the nominative ("we" ->
|
||
|
"I") and accusative ("us" -> "me") cases are handled, as are
|
||
|
possessive pronouns ("ours" -> "mine"). When third person
|
||
|
singular pronouns are returned they take the neuter gender by default
|
||
|
("they" -> "it"), not ("they"-> "she") nor ("they" -> "he"). This can be
|
||
|
changed with ``gender()``.
|
||
|
|
||
|
Note that all these methods ignore any whitespace surrounding the
|
||
|
word being inflected, but preserve that whitespace when the result is
|
||
|
returned. For example, ``plural(" cat ")`` returns " cats ".
|
||
|
|
||
|
|
||
|
``gender(genderletter)``
|
||
|
|
||
|
The third person plural pronoun takes the same form for the female, male and
|
||
|
neuter (e.g. "they"). The singular however, depends upon gender (e.g. "she",
|
||
|
"he", "it" and "they" -- "they" being the gender neutral form.) By default
|
||
|
``singular_noun`` returns the neuter form, however, the gender can be selected with
|
||
|
the ``gender`` method. Pass the first letter of the gender to
|
||
|
``gender`` to return the f(eminine), m(asculine), n(euter) or t(hey)
|
||
|
form of the singular. e.g.
|
||
|
gender('f') followed by singular_noun('themselves') returns 'herself'.
|
||
|
|
||
|
Numbered plurals
|
||
|
----------------
|
||
|
|
||
|
The ``plural...`` methods return only the inflected word, not the count that
|
||
|
was used to inflect it. Thus, in order to produce "I saw 3 ducks", it
|
||
|
is necessary to use:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
print("I saw", N, p.plural_noun(animal, N))
|
||
|
|
||
|
Since the usual purpose of producing a plural is to make it agree with
|
||
|
a preceding count, inflect.py provides a method
|
||
|
(``no(word, count)``) which, given a word and a(n optional) count, returns the
|
||
|
count followed by the correctly inflected word. Hence the previous
|
||
|
example can be rewritten:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
print("I saw ", p.no(animal, N))
|
||
|
|
||
|
In addition, if the count is zero (or some other term which implies
|
||
|
zero, such as ``"zero"``, ``"nil"``, etc.) the count is replaced by the
|
||
|
word "no". Hence, if ``N`` had the value zero, the previous example
|
||
|
would print (the somewhat more elegant)::
|
||
|
|
||
|
I saw no animals
|
||
|
|
||
|
rather than::
|
||
|
|
||
|
I saw 0 animals
|
||
|
|
||
|
Note that the name of the method is a pun: the method
|
||
|
returns either a number (a *No.*) or a ``"no"``, in front of the
|
||
|
inflected word.
|
||
|
|
||
|
|
||
|
Reducing the number of counts required
|
||
|
--------------------------------------
|
||
|
|
||
|
In some contexts, the need to supply an explicit count to the various
|
||
|
``plural...`` methods makes for tiresome repetition. For example:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
print(
|
||
|
plural_adj("This", errors),
|
||
|
plural_noun(" error", errors),
|
||
|
plural_verb(" was", errors),
|
||
|
" fatal.",
|
||
|
)
|
||
|
|
||
|
inflect.py therefore provides a method
|
||
|
(``num(count=None, show=None)``) which may be used to set a persistent "default number"
|
||
|
value. If such a value is set, it is subsequently used whenever an
|
||
|
optional second "number" argument is omitted. The default value thus set
|
||
|
can subsequently be removed by calling ``num()`` with no arguments.
|
||
|
Hence we could rewrite the previous example:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
p.num(errors)
|
||
|
print(p.plural_adj("This"), p.plural_noun(" error"), p.plural_verb(" was"), "fatal.")
|
||
|
p.num()
|
||
|
|
||
|
Normally, ``num()`` returns its first argument, so that it may also
|
||
|
be "inlined" in contexts like:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
print(p.num(errors), p.plural_noun(" error"), p.plural_verb(" was"), " detected.")
|
||
|
if severity > 1:
|
||
|
print(
|
||
|
p.plural_adj("This"), p.plural_noun(" error"), p.plural_verb(" was"), "fatal."
|
||
|
)
|
||
|
|
||
|
However, in certain contexts (see `INTERPOLATING INFLECTIONS IN STRINGS`)
|
||
|
it is preferable that ``num()`` return an empty string. Hence ``num()``
|
||
|
provides an optional second argument. If that argument is supplied (that is, if
|
||
|
it is defined) and evaluates to false, ``num`` returns an empty string
|
||
|
instead of its first argument. For example:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
print(p.num(errors, 0), p.no("error"), p.plural_verb(" was"), " detected.")
|
||
|
if severity > 1:
|
||
|
print(
|
||
|
p.plural_adj("This"), p.plural_noun(" error"), p.plural_verb(" was"), "fatal."
|
||
|
)
|
||
|
|
||
|
|
||
|
|
||
|
Number-insensitive equality
|
||
|
---------------------------
|
||
|
|
||
|
inflect.py also provides a solution to the problem
|
||
|
of comparing words of differing plurality through the methods
|
||
|
``compare(word1, word2)``, ``compare_nouns(word1, word2)``,
|
||
|
``compare_verbs(word1, word2)``, and ``compare_adjs(word1, word2)``.
|
||
|
Each of these methods takes two strings, and compares them
|
||
|
using the corresponding plural-inflection method (``plural()``, ``plural_noun()``,
|
||
|
``plural_verb()``, and ``plural_adj()`` respectively).
|
||
|
|
||
|
The comparison returns true if:
|
||
|
|
||
|
- the strings are equal, or
|
||
|
- one string is equal to a plural form of the other, or
|
||
|
- the strings are two different plural forms of the one word.
|
||
|
|
||
|
|
||
|
Hence all of the following return true:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
p.compare("index", "index") # RETURNS "eq"
|
||
|
p.compare("index", "indexes") # RETURNS "s:p"
|
||
|
p.compare("index", "indices") # RETURNS "s:p"
|
||
|
p.compare("indexes", "index") # RETURNS "p:s"
|
||
|
p.compare("indices", "index") # RETURNS "p:s"
|
||
|
p.compare("indices", "indexes") # RETURNS "p:p"
|
||
|
p.compare("indexes", "indices") # RETURNS "p:p"
|
||
|
p.compare("indices", "indices") # RETURNS "eq"
|
||
|
|
||
|
As indicated by the comments in the previous example, the actual value
|
||
|
returned by the various ``compare`` methods encodes which of the
|
||
|
three equality rules succeeded: "eq" is returned if the strings were
|
||
|
identical, "s:p" if the strings were singular and plural respectively,
|
||
|
"p:s" for plural and singular, and "p:p" for two distinct plurals.
|
||
|
Inequality is indicated by returning an empty string.
|
||
|
|
||
|
It should be noted that two distinct singular words which happen to take
|
||
|
the same plural form are *not* considered equal, nor are cases where
|
||
|
one (singular) word's plural is the other (plural) word's singular.
|
||
|
Hence all of the following return false:
|
||
|
|
||
|
.. code-block:: python
|
||
|
|
||
|
p.compare("base", "basis") # ALTHOUGH BOTH -> "bases"
|
||
|
p.compare("syrinx", "syringe") # ALTHOUGH BOTH -> "syringes"
|
||
|
p.compare("she", "he") # ALTHOUGH BOTH -> "they"
|
||
|
|
||
|
p.compare("opus", "operas") # ALTHOUGH "opus" -> "opera" -> "operas"
|
||
|
p.compare("taxi", "taxes") # ALTHOUGH "taxi" -> "taxis" -> "taxes"
|
||
|
|
||
|
Note too that, although the comparison is "number-insensitive" it is *not*
|
||
|
case-insensitive (that is, ``plural("time","Times")`` returns false. To obtain
|
||
|
both number and case insensitivity, use the ``lower()`` method on both strings
|
||
|
(that is, ``plural("time".lower(), "Times".lower())`` returns true).
|
||
|
|
||
|
Related Functionality
|
||
|
=====================
|
||
|
|
||
|
Shout out to these libraries that provide related functionality:
|
||
|
|
||
|
* `WordSet <https://jaracotext.readthedocs.io/en/latest/#jaraco.text.WordSet>`_
|
||
|
parses identifiers like variable names into sets of words suitable for re-assembling
|
||
|
in another form.
|
||
|
|
||
|
* `word2number <https://pypi.org/project/word2number/>`_ converts words to
|
||
|
a number.
|
||
|
|
||
|
|
||
|
For Enterprise
|
||
|
==============
|
||
|
|
||
|
Available as part of the Tidelift Subscription.
|
||
|
|
||
|
This project and the maintainers of thousands of other packages are working with Tidelift to deliver one enterprise subscription that covers all of the open source you use.
|
||
|
|
||
|
`Learn more <https://tidelift.com/subscription/pkg/pypi-PROJECT?utm_source=pypi-PROJECT&utm_medium=referral&utm_campaign=github>`_.
|
||
|
|
||
|
Security Contact
|
||
|
================
|
||
|
|
||
|
To report a security vulnerability, please use the
|
||
|
`Tidelift security contact <https://tidelift.com/security>`_.
|
||
|
Tidelift will coordinate the fix and disclosure.
|