build(pyproject.toml): drop support for python 3.9 (require 3.10+)

In upgrading via numpy#592 and numpy#622, requires stable use of __qualname__, not supported in dataclasses in python3.9 (solves numpy#637).

Author: mattgebert

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [Ubuntu]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         sphinx-version:
           ["sphinx==6.0", "sphinx==6.2", "sphinx==7.0", "sphinx>=7.3"]
         include:

README.rst

@@ -17,7 +17,7 @@ docstrings formatted according to the NumPy documentation format.
 The extension also adds the code description directives
 ``np:function``, ``np-c:function``, etc.
 
-numpydoc requires Python 3.9+ and sphinx 6+.
+numpydoc requires Python 3.10+ and sphinx 6+.
 
 For usage information, please refer to the `documentation
 <https://numpydoc.readthedocs.io/>`_.

doc/install.rst

@@ -5,7 +5,7 @@ Getting started
 Installation
 ============
 
-This extension requires Python 3.9+, sphinx 6+ and is available from:
+This extension requires Python 3.10+, sphinx 6+ and is available from:
 
 * `numpydoc on PyPI <http://pypi.python.org/pypi/numpydoc>`_
 * `numpydoc on GitHub <https://github.com/numpy/numpydoc/>`_

pyproject.toml

@@ -6,7 +6,7 @@ requires = ['setuptools>=61.2']
 name = 'numpydoc'
 description = 'Sphinx extension to support docstrings in Numpy format'
 readme = 'README.rst'
-requires-python = '>=3.9'
+requires-python = '>=3.10'
 dynamic = ['version']
 keywords = [
     'sphinx',
@@ -20,7 +20,6 @@ classifiers = [
     'Operating System :: OS Independent',
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',