Drop support for Python 3.9

Author: cyberw

Diff for: .github/workflows/tests.yml

@@ -144,7 +144,6 @@ jobs:
           - { name: "Python 3.12", python: "3.12", os: ubuntu-latest, env: "test:all" }
           - { name: "Python 3.11", python: "3.11", os: ubuntu-latest, env: "test:all" }
           - { name: "Python 3.10", python: "3.10", os: ubuntu-latest, env: "test:all" }
-          - { name: "Python 3.9", python: "3.9", os: ubuntu-latest, env: "test:all" }
 
     steps:
       - uses: actions/checkout@v4

Diff for: locust/main.py

@@ -287,9 +287,6 @@ def kill_workers(children):
 
     greenlet_exception_handler = greenlet_exception_logger(logger)
 
-    if sys.version_info < (3, 10):
-        logger.warning("Python 3.9 support is deprecated and will be removed soon")
-
     if options.list_commands:
         print("Available Users:")
         for name in user_classes:

Diff for: pyproject.toml

@@ -8,7 +8,7 @@ description = "Developer-friendly load testing framework"
 license = { text = "MIT" }
 dynamic = ["version"]
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 authors = [{ name = "Jonatan Heyman" }, { name = "Lars Holmberg" }]
 maintainers = [
     { name = "Lars Holmberg" },
@@ -23,7 +23,6 @@ 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",
@@ -156,7 +155,7 @@ locust = ["locust"]
 [tool.mypy]
 # missing type stubs
 ignore_missing_imports = true
-python_version = "3.9"
+python_version = "3.10"
 
 [tool.pyright]
 exclude = ["locust/test"]
@@ -199,7 +198,7 @@ run = [
 template = "hatch-test"
 
 [[tool.hatch.envs.test.matrix]]
-python = ["3.9", "3.10", "3.11", "3.12", "3.13"]
+python = ["3.10", "3.11", "3.12", "3.13"]
 
 
 ## Run all unit tests and advanced debugging