Test environment updates

.github/workflows/tests-and-linters.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, pypy2.7, pypy3.9]
+        python-version: [3.7, pypy2.7, pypy3.9]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4

docs/main/changelog.rst

@@ -7,6 +7,12 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly
 follows `Semantic versioning`_
 
+Develop
+-------
+
+- Drop support of Python 2.7, 3.5, and 3.6.
+- Regenerate C sources using Cython 0.29.36.
+
 4.41.0
 ------
 - Add support of Python 3.11.

setup.py

@@ -104,11 +104,7 @@ setup(name="dependency-injector",
           "License :: OSI Approved :: BSD License",
           "Operating System :: OS Independent",
           "Programming Language :: Python",
-          "Programming Language :: Python :: 2",
-          "Programming Language :: Python :: 2.7",
           "Programming Language :: Python :: 3",
-          "Programming Language :: Python :: 3.5",
-          "Programming Language :: Python :: 3.6",
           "Programming Language :: Python :: 3.7",
           "Programming Language :: Python :: 3.8",
           "Programming Language :: Python :: 3.9",

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist=
-    coveralls, pylint, flake8, pydocstyle, 3.8, 3.9, 3.10, 3.11, 3.12, pypy3.9, pypy3.10
+    coveralls, pylint, flake8, pydocstyle, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, pypy3.9, pypy3.10
 
 [testenv]
 deps=
@@ -29,7 +29,7 @@ basepython=python3.12
 usedevelop=True
 deps=
     {[testenv]deps}
-    cython<0.30
+    cython<3.0
     coverage
     coveralls
 commands=