drop support Python2

.github/workflows/unittest.yml

@@ -20,8 +20,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip setuptools wheel
-        python -m pip install jieba six
+        python -m pip install jieba
     - name: run unittest
       run: |
         python -m unittest discover tests

pinyin/__init__.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from __future__ import unicode_literals
 from io import open
 
 import jieba
@@ -10,12 +9,11 @@
 
 from pinyin.config import FILE_WORDS, FILE_WORD, FILE_TERM, FILE_USER_DICT, CHINESE_RE
 from pinyin.utils import Singleton
-from six import with_metaclass
 
 __all__ = ["Pinyin"]
 
 
-class Pinyin(with_metaclass(Singleton, object)):
+class Pinyin(metaclass=Singleton):
 
     def __init__(self):
 

pinyin/config.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from __future__ import unicode_literals
 import re
 from os.path import join, abspath, dirname
 

pinyin/utils.py

@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
 
-from __future__ import unicode_literals
 class Singleton(type):
 
     _instances = {}

pyproject.toml

@@ -16,7 +16,6 @@ classifiers = [
 
 dependencies = [
     "jieba",
-    "six",
 ]
 
 readme = "README.md"
@@ -30,4 +29,7 @@ Homepage = "https://github.com/xospc/python-smart-pinyin"
 requires = ["setuptools>=64", "setuptools-scm>=8"]
 build-backend = "setuptools.build_meta"
 
+[tool.requires-python]
+version = ">=3.10"
+
 [tool.setuptools_scm]

tests/test_pinyin.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-from __future__ import unicode_literals
 import unittest
 
 from pinyin import Pinyin