Remove support of python3.7/3.8

Author: vyahello

README.md

@@ -18,7 +18,7 @@
 ## Tools
 
 ### Production
-- python 3.7+
+- python 3.9+
 - [flake8](http://flake8.pycqa.org/en/latest/)
 
 ### Development

pyproject.toml

@@ -1,5 +1,5 @@
 [tool.flake8]
-min_python_version = "3.8.0"
+min_python_version = "3.9.0"
 max_complexity = 10
 max-line-length = 80
 statistics = true
@@ -9,7 +9,7 @@ eradicate-aggressive = true
 [tool.black]
 line-length = 80
 skip-string-normalization = true
-target-version = ["py38", "py39", "py310", "py311", "py312", "py313", "py314"]
+target-version = ["py39", "py310", "py311", "py312", "py313", "py314"]
 exclude = '''
 /(
     \.pytest_cache

requirements-dev.txt

@@ -1,6 +1,8 @@
 black==25.9.0
 flake8>=4.0.1
-pytest==7.0.1
+pytest==8.4.2
 pytest-cov==3.0.0
 coverage==5.3
 coveralls==2.1.2
+setuptools==80.9.0
+wheel==0.45.1

setup.py

@@ -43,8 +43,6 @@ def __load_requirements() -> Sequence[str]:
             'Intended Audience :: Developers',
             f'License :: OSI Approved :: {Meta.license}',
             'Programming Language :: Python',
-            'Programming Language :: Python :: 3.7',
-            'Programming Language :: Python :: 3.8',
             'Programming Language :: Python :: 3.9',
             'Programming Language :: Python :: 3.10',
             'Programming Language :: Python :: 3.11',