Replace pydantic...validate_call with typeguard.typecheck

.github/workflows/main.yml

@@ -50,8 +50,6 @@ jobs:
           platform: ubuntu-latest
         - python: "3.x"
           platform: ubuntu-latest
-          env:
-            TOX_ENV: pydantic1
     runs-on: ${{ matrix.platform }}
     continue-on-error: ${{ matrix.python == '3.13' }}
     steps:

inflect/__init__.py

@@ -60,6 +60,7 @@
 import re
 from numbers import Number
 from typing import (
+    TYPE_CHECKING,
     Any,
     Callable,
     Dict,
@@ -74,12 +75,9 @@
 )
 
 from more_itertools import windowed_complete
-from pydantic import Field
+from typeguard import typechecked
 from typing_extensions import Annotated, Literal
 
-from .compat.pydantic import same_method
-from .compat.pydantic1 import validate_call
-
 
 class UnknownClassicalModeError(Exception):
     pass
@@ -2021,10 +2019,25 @@ def __init__(self, orig) -> None:
         self.last = self.split_[-1]
 
 
-Word = Annotated[str, Field(min_length=1)]
 Falsish = Any  # ideally, falsish would only validate on bool(value) is False
 
 
+_STATIC_TYPE_CHECKING = TYPE_CHECKING
+# ^-- Workaround for typeguard AST manipulation:
+#     https://github.com/agronholm/typeguard/issues/353#issuecomment-1556306554
+
+if _STATIC_TYPE_CHECKING:  # pragma: no cover
+    Word = Annotated[str, "String with at least 1 character"]
+else:
+
+    class _WordMeta(type):  # Too dynamic to be supported by mypy...
+        def __instancecheck__(self, instance: Any) -> bool:
+            return isinstance(instance, str) and len(instance) >= 1
+
+    class Word(metaclass=_WordMeta):  # type: ignore[no-redef]
+        """String with at least 1 character"""
+
+
 class engine:
     def __init__(self) -> None:
         self.classical_dict = def_classical.copy()
@@ -2046,7 +2059,7 @@ def _number_args(self):
     def _number_args(self, val):
         self.__number_args = val
 
-    @validate_call
+    @typechecked
     def defnoun(self, singular: Optional[Word], plural: Optional[Word]) -> int:
         """
         Set the noun plural of singular to plural.
@@ -2058,7 +2071,7 @@ def defnoun(self, singular: Optional[Word], plural: Optional[Word]) -> int:
         self.si_sb_user_defined.extend((plural, singular))
         return 1
 
-    @validate_call
+    @typechecked
     def defverb(
         self,
         s1: Optional[Word],
@@ -2083,7 +2096,7 @@ def defverb(
         self.pl_v_user_defined.extend((s1, p1, s2, p2, s3, p3))
         return 1
 
-    @validate_call
+    @typechecked
     def defadj(self, singular: Optional[Word], plural: Optional[Word]) -> int:
         """
         Set the adjective plural of singular to plural.
@@ -2094,7 +2107,7 @@ def defadj(self, singular: Optional[Word], plural: Optional[Word]) -> int:
         self.pl_adj_user_defined.extend((singular, plural))
         return 1
 
-    @validate_call
+    @typechecked
     def defa(self, pattern: Optional[Word]) -> int:
         """
         Define the indefinite article as 'a' for words matching pattern.
@@ -2104,7 +2117,7 @@ def defa(self, pattern: Optional[Word]) -> int:
         self.A_a_user_defined.extend((pattern, "a"))
         return 1
 
-    @validate_call
+    @typechecked
     def defan(self, pattern: Optional[Word]) -> int:
         """
         Define the indefinite article as 'an' for words matching pattern.
@@ -2131,7 +2144,7 @@ def checkpatplural(self, pattern: Optional[Word]) -> None:
         """
         return
 
-    @validate_call
+    @typechecked
     def ud_match(self, word: Word, wordlist: Sequence[Optional[Word]]) -> Optional[str]:
         for i in range(len(wordlist) - 2, -2, -2):  # backwards through even elements
             mo = re.search(rf"^{wordlist[i]}$", word, re.IGNORECASE)
@@ -2271,7 +2284,7 @@ def _string_to_substitute(
 
     # 0. PERFORM GENERAL INFLECTIONS IN A STRING
 
-    @validate_call
+    @typechecked
     def inflect(self, text: Word) -> str:
         """
         Perform inflections in a string.
@@ -2348,7 +2361,7 @@ def partition_word(self, text: str) -> Tuple[str, str, str]:
         else:
             return "", "", ""
 
-    @validate_call
+    @typechecked
     def plural(self, text: Word, count: Optional[Union[str, int, Any]] = None) -> str:
         """
         Return the plural of text.
@@ -2372,7 +2385,7 @@ def plural(self, text: Word, count: Optional[Union[str, int, Any]] = None) -> st
         )
         return f"{pre}{plural}{post}"
 
-    @validate_call
+    @typechecked
     def plural_noun(
         self, text: Word, count: Optional[Union[str, int, Any]] = None
     ) -> str:
@@ -2393,7 +2406,7 @@ def plural_noun(
         plural = self.postprocess(word, self._plnoun(word, count))
         return f"{pre}{plural}{post}"
 
-    @validate_call
+    @typechecked
     def plural_verb(
         self, text: Word, count: Optional[Union[str, int, Any]] = None
     ) -> str:
@@ -2417,7 +2430,7 @@ def plural_verb(
         )
         return f"{pre}{plural}{post}"
 
-    @validate_call
+    @typechecked
     def plural_adj(
         self, text: Word, count: Optional[Union[str, int, Any]] = None
     ) -> str:
@@ -2438,7 +2451,7 @@ def plural_adj(
         plural = self.postprocess(word, self._pl_special_adjective(word, count) or word)
         return f"{pre}{plural}{post}"
 
-    @validate_call
+    @typechecked
     def compare(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         compare word1 and word2 for equality regardless of plurality
@@ -2461,15 +2474,13 @@ def compare(self, word1: Word, word2: Word) -> Union[str, bool]:
         >>> compare('egg', '')
         Traceback (most recent call last):
         ...
-        pydantic...ValidationError: ...
-        ...
-          ...at least 1 character...
+        typeguard.TypeCheckError:...is not an instance of inflect.Word
         """
         norms = self.plural_noun, self.plural_verb, self.plural_adj
         results = (self._plequal(word1, word2, norm) for norm in norms)
         return next(filter(None, results), False)
 
-    @validate_call
+    @typechecked
     def compare_nouns(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         compare word1 and word2 for equality regardless of plurality
@@ -2485,7 +2496,7 @@ def compare_nouns(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         return self._plequal(word1, word2, self.plural_noun)
 
-    @validate_call
+    @typechecked
     def compare_verbs(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         compare word1 and word2 for equality regardless of plurality
@@ -2501,7 +2512,7 @@ def compare_verbs(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         return self._plequal(word1, word2, self.plural_verb)
 
-    @validate_call
+    @typechecked
     def compare_adjs(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         compare word1 and word2 for equality regardless of plurality
@@ -2517,7 +2528,7 @@ def compare_adjs(self, word1: Word, word2: Word) -> Union[str, bool]:
         """
         return self._plequal(word1, word2, self.plural_adj)
 
-    @validate_call
+    @typechecked
     def singular_noun(
         self,
         text: Word,
@@ -2575,12 +2586,12 @@ def _plequal(self, word1: str, word2: str, pl) -> Union[str, bool]:  # noqa: C90
             return "s:p"
         self.classical_dict = classval.copy()
 
-        if same_method(pl, self.plural) or same_method(pl, self.plural_noun):
+        if pl == self.plural or pl == self.plural_noun:
             if self._pl_check_plurals_N(word1, word2):
                 return "p:p"
             if self._pl_check_plurals_N(word2, word1):
                 return "p:p"
-        if same_method(pl, self.plural) or same_method(pl, self.plural_adj):
+        if pl == self.plural or pl == self.plural_adj:
             if self._pl_check_plurals_adj(word1, word2):
                 return "p:p"
         return False
@@ -3475,7 +3486,7 @@ def _sinoun(  # noqa: C901
 
     # ADJECTIVES
 
-    @validate_call
+    @typechecked
     def a(self, text: Word, count: Optional[Union[int, str, Any]] = 1) -> str:
         """
         Return the appropriate indefinite article followed by text.
@@ -3556,7 +3567,7 @@ def _indef_article(self, word: str, count: Union[int, str, Any]) -> str:
 
     # 2. TRANSLATE ZERO-QUANTIFIED $word TO "no plural($word)"
 
-    @validate_call
+    @typechecked
     def no(self, text: Word, count: Optional[Union[int, str]] = None) -> str:
         """
         If count is 0, no, zero or nil, return 'no' followed by the plural
@@ -3594,7 +3605,7 @@ def no(self, text: Word, count: Optional[Union[int, str]] = None) -> str:
 
     # PARTICIPLES
 
-    @validate_call
+    @typechecked
     def present_participle(self, word: Word) -> str:
         """
         Return the present participle for word.
@@ -3613,7 +3624,7 @@ def present_participle(self, word: Word) -> str:
 
     # NUMERICAL INFLECTIONS
 
-    @validate_call(config=dict(arbitrary_types_allowed=True))
+    @typechecked
     def ordinal(self, num: Union[Number, Word]) -> str:
         """
         Return the ordinal of num.
@@ -3772,7 +3783,7 @@ def enword(self, num: str, group: int) -> str:
             num = ONE_DIGIT_WORD.sub(self.unitsub, num, 1)
         return num
 
-    @validate_call(config=dict(arbitrary_types_allowed=True))  # noqa: C901
+    @typechecked
     def number_to_words(  # noqa: C901
         self,
         num: Union[Number, Word],
@@ -3924,7 +3935,7 @@ def number_to_words(  # noqa: C901
 
     # Join words with commas and a trailing 'and' (when appropriate)...
 
-    @validate_call
+    @typechecked
     def join(
         self,
         words: Optional[Sequence[Word]],

newsfragments/195.feature.rst

@@ -0,0 +1 @@
+Replace pydantic with typeguard

setup.cfg

@@ -23,7 +23,7 @@ include_package_data = true
 python_requires = >=3.8
 install_requires =
 	more_itertools
-	pydantic >= 1.9.1
+	typeguard >= 4.0.1
 	typing_extensions
 keywords = plural inflect participle
 

tests/test_pwd.py

@@ -1,4 +1,5 @@
 import pytest
+from typeguard import TypeCheckError
 
 import inflect
 from inflect import (
@@ -8,7 +9,6 @@
     NumOutOfRangeError,
     UnknownClassicalModeError,
 )
-from inflect.compat.pydantic import same_method
 
 missing = object()
 
@@ -290,13 +290,13 @@ def test_pl(self):
         assert p.plural("die") == "dice"
         assert p.plural_noun("die") == "dice"
 
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p.plural("")
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p.plural_noun("")
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p.plural_verb("")
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p.plural_adj("")
 
     def test_sinoun(self):
@@ -696,7 +696,7 @@ def test_classical_pl(self):
 
     def test__pl_special_verb(self):
         p = inflect.engine()
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p._pl_special_verb("")
         assert p._pl_special_verb("am") == "are"
         assert p._pl_special_verb("am", 0) == "are"
@@ -819,13 +819,13 @@ def test_a_alt(self):
         assert p.a("cat", 1) == "a cat"
         assert p.a("cat", 2) == "2 cat"
 
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeCheckError):
             p.a("")
 
     def test_a_and_an_same_method(self):
-        assert same_method(inflect.engine.a, inflect.engine.an)
+        assert inflect.engine.a == inflect.engine.an
         p = inflect.engine()
-        assert same_method(p.a, p.an)
+        assert p.a == p.an
 
     def test_no(self):
         p = inflect.engine()

tox.ini

@@ -9,10 +9,6 @@ usedevelop = True
 extras =
 	testing
 
-[testenv:pydantic1]
-deps =
-	pydantic < 2
-
 [testenv:diffcov]
 description = run tests and check that diff from main is covered
 deps =