Python 3.10 is minimum python for numpy 2.1

setup.py

@@ -119,7 +119,7 @@
     # 'Programming Language' classifiers above, 'pip install' will check this
     # and refuse to install the project if the version does not match. Sele
     # https://packaging.python.org/guides/distributing-packages-using-setuptools/#python-requires
-    python_requires=">=3.9, <4",
+    python_requires=">=3.10, <4",
     # This field lists other packages that your project depends on to run.
     # Any package you put here will be installed by pip when your project is
     # installed, so they must be valid existing projects.