Drop Python 3.9 support

.github/workflows/workflow.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}

pyproject.toml

@@ -13,11 +13,10 @@ select = [
 [tool.tox]
 legacy_tox_ini = """
     [tox]
-    envlist = quality, test, pypy, pypy3, py{39,310,311,312,313}
+    envlist = quality, test, pypy, pypy3, py{310,311,312,313}
 
     [gh-actions]
     python =
-        3.9: py39
         3.10: py310
         3.11: py311, quality, test, pypy, pypy3
         3.12: py312
@@ -27,7 +26,6 @@ legacy_tox_ini = """
     basepython =
         pypy: {env:PYTHON:pypy}
         pypy3: {env:PYTHON:pypy3}
-        py39: {env:PYTHON:python3.9}
         py310: {env:PYTHON:python3.10}
         py311: {env:PYTHON:python3.11}
         py312: {env:PYTHON:python3.12}
@@ -77,7 +75,7 @@ authors = [
 ]
 description = "Python 3 library to write CZML"
 readme = "README.rst"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 keywords = ["czml", "cesium", "orbits"]
 license = {text = "MIT"}
 classifiers = [
@@ -87,7 +85,6 @@ 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",

src/czml3/common.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 import datetime as dt
 
 from pydantic import BaseModel, field_validator

src/czml3/core.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 from typing import Any
 from uuid import uuid4
 

src/czml3/types.py

@@ -26,29 +26,29 @@ def get_color(color):
     """Determines if the input is a valid color"""
     if color is None or (
         isinstance(color, list)
-        and all(issubclass(type(v), (int, float)) for v in color)
+        and all(issubclass(type(v), int | float) for v in color)
         and len(color) == 4
         and (all(0 <= v <= 255 for v in color) or all(0 <= v <= 1 for v in color))
     ):
         return color
     elif (
         isinstance(color, list)
-        and all(issubclass(type(v), (int, float)) for v in color)
+        and all(issubclass(type(v), int | float) for v in color)
         and len(color) == 3
         and all(0 <= v <= 255 for v in color)
     ):
         return color + [255]
     # rgbf or rgbaf
     # if (
     #     isinstance(color, list)
-    #     and all(issubclass(type(v), (int, float)) for v in color)
+    #     and all(issubclass(type(v), int | float) for v in color)
     #     and (3 <= len(color) <= 4)
     #     and not all(0 <= v <= 1 for v in color)
     # ):
     #     raise TypeError("RGBF or RGBAF values must be between 0 and 1")
     elif (
         isinstance(color, list)
-        and all(issubclass(type(v), (int, float)) for v in color)
+        and all(issubclass(type(v), int | float) for v in color)
         and len(color) == 3
         and all(0 <= v <= 1 for v in color)
     ):
@@ -571,6 +571,6 @@ class NumberValue(BaseCZMLObject):
 
     @model_serializer
     def custom_serializer(self):
-        if isinstance(self.values, (int, float)):
+        if isinstance(self.values, int | float):
             return {"number": self.values}
         return {"number": list(self.values)}