fix: use proper SPDX license identifier in pyproject.toml and add correct copyright comments to package source and tests (#1109)

Author: jenstroeger

LICENSE.md

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 1999–2023
+Copyright (c) 1999–2026 CODEOWNERS
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

pyproject.toml

@@ -10,15 +10,15 @@ requires-python = ">=3.10.0,<3.14.0"
 authors = [{name = "Author", email = "author@email"}]
 maintainers = [{name = "Maintainer", email = "maintainer@email"}]
 dynamic = ["version", "description"]
-license = {file = "LICENSE.md"}
+license = "MIT"  # https://spdx.org/licenses/MIT.html
+license-files = ["LICENSE.md"]
 readme = "README.md"
 dependencies = []
 keywords = []
 # https://pypi.org/classifiers/
 classifiers = [
     "Development Status :: 1 - Planning",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
     "Operating System :: OS Independent",
     "Programming Language :: Python",

src/package/__init__.py

@@ -3,6 +3,9 @@
 This package is an empty cookiecutter package example. Enjoy!
 """
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 # The version of this package. There's no comprehensive, official list of other
 # magic constants, so we stick with this one only for now. See also this conversation:
 # https://stackoverflow.com/questions/38344848/is-there-a-comprehensive-table-of-pythons-magic-constants

src/package/__main__.py

@@ -1,5 +1,8 @@
 """The main entry point into this package when run as a script."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 # For more details, see also
 # https://docs.python.org/3/library/runpy.html
 # https://docs.python.org/3/reference/import.html#special-considerations-for-main

src/package/something.py

@@ -1,5 +1,8 @@
 """The Something module provides some things and functions."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 
 class Something:
     """The Something class provides some things."""

tests/integration/test_something.py

@@ -1,5 +1,8 @@
 """Test the Package itself using its external interface as in integration into a larger run context."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 # https://bandit.readthedocs.io/en/latest/blacklists/blacklist_imports.html#b404-import-subprocess
 import subprocess  # nosec B404
 

tests/performance/test_something.py

@@ -1,5 +1,8 @@
 """Test the performance of various package parts, or the package as a whole."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 import pytest
 from pytest_benchmark.fixture import BenchmarkFixture
 

tests/unit/conftest.py

@@ -1,5 +1,8 @@
 """Test configuration and other goodness."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 import os
 
 import hypothesis

tests/unit/test_something.py

@@ -1,5 +1,8 @@
 """Test the Something module as a unit test. Add more tests here, as needed."""
 
+# Copyright (c) 2021-2026 CODEOWNERS
+# This code is licensed under MIT license, see LICENSE.md for details.
+
 import faker
 from hypothesis import given, strategies
 from pytest_cases import parametrize_with_cases