feat: Disable support for python 3.9 and enable support for python3.13

.github/sync-repo-settings.yaml

@@ -27,10 +27,10 @@ branchProtectionRules:
     requiredStatusCheckContexts:
       - "cla/google"
       - "lint"
-      - "integration-test-pr-py39 (langchain-spanner-testing)"
       - "integration-test-pr-py310 (langchain-spanner-testing)"
       - "integration-test-pr-py311 (langchain-spanner-testing)"
       - "integration-test-pr-py312 (langchain-spanner-testing)"
+      - "integration-test-pr-py313 (langchain-spanner-testing)"
       - "conventionalcommits.org"
       - "header-check"
     # - Add required status checks like presubmit tests

DEVELOPER.md

@@ -34,11 +34,11 @@ These tests are registered as required tests in `.github/sync-repo-settings.yaml
 
 #### Trigger Setup
 
-Cloud Build triggers (for Python versions 3.9 to 3.11) were created with the following specs:
+Cloud Build triggers (for Python versions 3.10 to 3.13) were created with the following specs:
 
 ```YAML
 name: integration-test-pr-py39
-description: Run integration tests on PR for Python 3.9
+description: Run integration tests on PR for Python 3.10
 filename: integration.cloudbuild.yaml
 github:
   name: langchain-google-spanner-python
@@ -55,7 +55,7 @@ substitutions:
   _INSTANCE_ID: <ADD_VALUE>
   _PG_DATABASE: <ADD_VALUE>
   _GOOGLE_DATABASE: <ADD_VALUE>
-  _VERSION: "3.9"
+  _VERSION: "3.10"
 ```
 
 Use `gcloud builds triggers import --source=trigger.yaml` to create triggers via the command line

README.rst

@@ -44,7 +44,7 @@ With `virtualenv`_, it’s possible to install this library without needing syst
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Python >= 3.9
+Python >= 3.10
 
 Mac/Linux
 ^^^^^^^^^

integration.cloudbuild.yaml

@@ -38,7 +38,7 @@ substitutions:
   _INSTANCE_ID: test-instance
   _GOOGLE_DATABASE: test-gsql-db
   _PG_DATABASE: test-pgsql-db
-  _VERSION: "3.9"
+  _VERSION: "3.10"
 
 options:
   dynamicSubstitutions: true

pyproject.toml

@@ -4,7 +4,7 @@ dynamic = ["version"]
 description = "LangChain integrations for Google Cloud Spanner"
 readme = "README.rst"
 license = {file = "LICENSE"}
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 authors = [
     {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]
@@ -19,10 +19,10 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "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",
+    "Programming Language :: Python :: 3.13",
 ]
 
 [tool.setuptools.dynamic]
@@ -58,13 +58,13 @@ requires = ["setuptools"]
 build-backend = "setuptools.build_meta"
 
 [tool.black]
-target-version = ['py39']
+target-version = ['py310']
 
 [tool.isort]
 profile = "black"
 
 [tool.mypy]
-python_version = 3.9
+python_version = "3.10"
 warn_unused_configs = true
 
 exclude = [