Bump min support Python to 3.10

Follows numpy 2.1 requiring >= 3.10,

.github/workflows/benchmark.yml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: "3.11"
+        python-version: "3.12"
     - name: Install dependencies
       run: |
         pip install -e .[dev] -c etc/requirements_dev.txt

.github/workflows/main.yml

@@ -16,9 +16,9 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.9", "3.12"]
+        python-version: ["3.10", "3.12"]
         include:
-          - python-version: "3.9"
+          - python-version: "3.10"
             requirements_file: requirements_dev.txt
           - python-version: "3.12"
             requirements_file: requirements_minpandas.txt

.github/workflows/release.yml

@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.11
+    - name: Set up Python 3.12
       uses: actions/setup-python@v5
       with:
-        python-version: "3.11"
+        python-version: "3.12"
 
     - name: Install build dependencies
       run: |

etc/requirements.txt

@@ -1,12 +1,12 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
 #    pip-compile --output-file=etc/requirements.txt pyproject.toml
 #
 korean-lunar-calendar==0.3.1
     # via exchange_calendars (pyproject.toml)
-numpy==2.0.2
+numpy==2.1.1
     # via
     #   exchange_calendars (pyproject.toml)
     #   pandas

etc/requirements_dev.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
 #    pip-compile --extra=dev --output-file=etc/requirements_dev.txt pyproject.toml
@@ -25,15 +25,13 @@ flake8==7.1.1
     # via exchange_calendars (pyproject.toml)
 hypothesis==6.112.1
     # via exchange_calendars (pyproject.toml)
-importlib-metadata==8.5.0
-    # via build
 iniconfig==2.0.0
     # via pytest
 korean-lunar-calendar==0.3.1
     # via exchange_calendars (pyproject.toml)
 mccabe==0.7.0
     # via flake8
-numpy==2.0.2
+numpy==2.1.1
     # via
     #   exchange_calendars (pyproject.toml)
     #   pandas
@@ -89,8 +87,6 @@ tzdata==2024.1
     #   pandas
 wheel==0.44.0
     # via pip-tools
-zipp==3.20.2
-    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip

etc/requirements_minpandas.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
 #    pip-compile --extra=dev --output-file=etc/requirements_minpandas.txt pyproject.toml
@@ -29,8 +29,6 @@ flake8==7.1.1
     # via exchange_calendars (pyproject.toml)
 hypothesis==6.112.1
     # via exchange_calendars (pyproject.toml)
-importlib-metadata==8.5.0
-    # via build
 iniconfig==2.0.0
     # via pytest
 korean-lunar-calendar==0.3.1
@@ -91,8 +89,6 @@ tzdata==2024.1
     # via exchange_calendars (pyproject.toml)
 wheel==0.44.0
     # via pip-tools
-zipp==3.20.2
-    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip

pyproject.toml

@@ -12,12 +12,11 @@ authors = [
 readme = "README.md"
 license = {file = "LICENSE"}
 keywords = ["finance", "security", "calendar", "exchange"]
-requires-python = "~=3.9"
+requires-python = "~=3.10"
 classifiers = [
 	"Development Status :: 4 - Beta",
     "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",
@@ -64,4 +63,4 @@ write_to = "exchange_calendars/_version.py"
 
 [tool.black]
 line-length = 88
-target-version = ['py39', 'py310', 'py311', 'py312']
+target-version = ['py310', 'py311', 'py312']