drop 3.9 support

Fixes #37

Author: dandavison

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python: ["3.9", "3.12"]
+        python: ["3.10", "3.13"]
         os: [ubuntu-latest, macos-intel, macos-arm, windows-latest]
         include:
           - os: macos-intel

README.md

@@ -10,7 +10,7 @@ Prerequisites:
 * [Temporal CLI installed](https://docs.temporal.io/cli#install)
 * [Local Temporal server running](https://docs.temporal.io/cli/server#start-dev)
 
-The SDK requires Python >= 3.9. You can install Python using uv. For example,
+The SDK requires Python >= 3.10. You can install Python using uv. For example,
 
     uv python install 3.13
 

cloud_export_to_parquet/README.md

@@ -2,7 +2,7 @@
 
 This is an example workflow to convert exported file from proto to parquet file. The workflow is an hourly schedule. 
 
-Please make sure your python is 3.9 above. For this sample, run:
+Please make sure your python version is 3.10 or above. For this sample, run:
 
     uv sync --group=cloud-export-to-parquet
 

pyproject.toml

@@ -3,7 +3,7 @@ name = "temporalio-samples"
 version = "0.1a1"
 description = "Temporal.io Python SDK samples"
 authors = [{ name = "Temporal Technologies Inc", email = "sdk@temporal.io" }]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 readme = "README.md"
 license = "MIT"
 dependencies = ["temporalio>=1.14.1,<2"]
@@ -64,8 +64,8 @@ trio-async = [
     "trio-asyncio>=0.15.0,<0.16",
 ]
 cloud-export-to-parquet = [
-    "pandas>=2.2.2,<3 ; python_version >= '3.9' and python_version < '4.0'",
-    "numpy>=1.26.0,<2 ; python_version >= '3.9' and python_version < '3.13'",
+    "pandas>=2.2.2,<3 ; python_version >= '3.10' and python_version < '4.0'",
+    "numpy>=1.26.0,<2 ; python_version >= '3.10' and python_version < '3.13'",
     "boto3>=1.34.89,<2",
     "pyarrow>=19.0.1",
 ]