chore: Drop Python 3.9 support

Signed-off-by: Sreekanth <prsreekanth920@gmail.com>

Author: BulkBeing

.github/workflows/coverage.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9"]
+        python-version: ["3.10"]
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/pypi.yaml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.9" ]
+        python-version: [ "3.10" ]
 
     name: Publish to PyPi
     steps:

.github/workflows/run-tests.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - uses: actions/checkout@v3

.pre-commit-config.yaml

@@ -1,11 +1,11 @@
 default_language_version:
-    python: python3.9
+    python: python3.10
 repos:
 - repo: https://github.com/psf/black
   rev: 23.3.0
   hooks:
   -   id: black
-      language_version: python3.9
+      language_version: python3.10
       args: [--config=pyproject.toml, --diff, --color ]
 - repo: https://github.com/charliermarsh/ruff-pre-commit
   rev: 'v0.0.264'

packages/pynumaflow/docs/contributing.md

@@ -6,7 +6,7 @@ Thank you for your interest in contributing to pynumaflow! This guide will help
 
 ### Prerequisites
 
-- Python 3.9 or higher
+- Python 3.10 or higher
 - [Poetry](https://python-poetry.org/) for dependency management
 - Git
 

packages/pynumaflow/examples/sourcetransform/async_event_time_filter/pyproject.toml

@@ -7,7 +7,7 @@ readme = "README.md"
 packages = [{include = "mapt_event_time_filter"}]
 
 [tool.poetry.dependencies]
-python = ">=3.9, <3.12"
+python = ">=3.10, <3.12"
 pynumaflow = { path = "../../../"}
 
 [build-system]

packages/pynumaflow/examples/sourcetransform/event_time_filter/pyproject.toml

@@ -7,7 +7,7 @@ readme = "README.md"
 packages = [{include = "mapt_event_time_filter"}]
 
 [tool.poetry.dependencies]
-python = ">=3.9, <3.12"
+python = ">=3.10, <3.12"
 pynumaflow = { path = "../../../"}
 
 [build-system]

packages/pynumaflow/poetry.lock

@@ -13,7 +13,6 @@ classifiers = [
     "Topic :: Software Development :: Libraries",
     "License :: OSI Approved :: Apache Software License",
     "Intended Audience :: Developers",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -23,7 +22,7 @@ classifiers = [
 repository = "https://github.com/numaproj/numaflow-python"
 
 [tool.poetry.dependencies]
-python = ">=3.9, <3.15"
+python = ">=3.10, <3.15"
 grpcio = "^1.48.1"
 grpcio-tools = "^1.48.1"
 google-api-core = "^2.11.0"
@@ -64,7 +63,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.black]
 line-length = 100
-target-version = ["py39"]
+target-version = ["py310"]
 include = '\.pyi?$'
 exclude = '''
 /(
@@ -88,7 +87,7 @@ exclude = '''
 [tool.ruff]
 line-length = 100
 src = ["pynumaflow", "tests", "examples"]
-target-version = "py39"
+target-version = "py310"
 show-fixes = true
 extend-exclude = [
     "*_pb2.py",