From 25d35fc4283dedd2053ec6d821f4b707fff8d72c Mon Sep 17 00:00:00 2001
From: Konstantin Chernyshev <k4black@ya.ru>
Date: Thu, 16 Nov 2023 19:00:15 +0100
Subject: [PATCH 1/8] ci: enable 3.12 in ci tests

---
 .github/workflows/ci.yaml             |    2 +-
 README.md                             |    2 +-
 nltk/test/unit/translate/test_bleu.py |    1 -
 nltk/translate/bleu_score.py          |   29 +++++++++++++++++++++++++++--
 setup.py                              |    3 ++-
 5 files changed, 31 insertions(+), 6 deletions(-)

--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -76,7 +76,7 @@ jobs:
     needs: [cache_nltk_data, cache_third_party]
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
         os: [ubuntu-latest, macos-latest, windows-latest]
       fail-fast: false
     runs-on: ${{ matrix.os }}
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 NLTK -- the Natural Language Toolkit -- is a suite of open source Python
 modules, data sets, and tutorials supporting research and development in Natural
-Language Processing. NLTK requires Python version 3.7, 3.8, 3.9, 3.10 or 3.11.
+Language Processing. NLTK requires Python version 3.7, 3.8, 3.9, 3.10, 3.11 or 3.12.
 
 For documentation, please visit [nltk.org](https://www.nltk.org/).
 
--- a/nltk/test/unit/translate/test_bleu.py
+++ b/nltk/test/unit/translate/test_bleu.py
@@ -2,7 +2,6 @@
 Tests for BLEU translation evaluation metric
 """
 
-import io
 import unittest
 
 from nltk.data import find
--- a/nltk/translate/bleu_score.py
+++ b/nltk/translate/bleu_score.py
@@ -7,16 +7,41 @@
 # For license information, see LICENSE.TXT
 
 """BLEU score implementation."""
-
 import math
 import sys
 import warnings
 from collections import Counter
-from fractions import Fraction
+from fractions import Fraction as _Fraction
 
 from nltk.util import ngrams
 
 
+class Fraction(_Fraction):
+    """Fraction with _normalize=False support for 3.12"""
+
+    def __new__(cls, numerator=0, denominator=None, _normalize=False):
+        if sys.version_info >= (3, 12):
+            self = super().__new__(cls, numerator, denominator)
+        else:
+            self = super().__new__(cls, numerator, denominator, _normalize=_normalize)
+        self._normalize = _normalize
+        self._original_numerator = numerator
+        self._original_denominator = denominator
+        return self
+
+    @property
+    def numerator(self):
+        if not self._normalize:
+            return self._original_numerator
+        return super().numerator
+
+    @property
+    def denominator(self):
+        if not self._normalize:
+            return self._original_denominator
+        return super().denominator
+
+
 def sentence_bleu(
     references,
     hypothesis,
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,7 @@ setup(
     },
     long_description="""\
 The Natural Language Toolkit (NLTK) is a Python package for
-natural language processing.  NLTK requires Python 3.7, 3.8, 3.9, 3.10 or 3.11.""",
+natural language processing.  NLTK requires Python 3.7, 3.8, 3.9, 3.10, 3.11 or 3.12.""",
     license="Apache License, Version 2.0",
     keywords=[
         "NLP",
@@ -100,6 +100,7 @@ natural language processing.  NLTK requi
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Scientific/Engineering",
         "Topic :: Scientific/Engineering :: Artificial Intelligence",
         "Topic :: Scientific/Engineering :: Human Machine Interfaces",