fix: drop support for python 3.9 (#9818)

Author: RogerHYang

.github/workflows/python-CI.yml

@@ -187,7 +187,7 @@ jobs:
     if: ${{ needs.changes.outputs.phoenix == 'true' }}
     strategy:
       matrix:
-        py: [3.9]
+        py: ["3.10"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -216,7 +216,7 @@ jobs:
     if: ${{ needs.changes.outputs.phoenix == 'true' }}
     strategy:
       matrix:
-        py: [3.9]
+        py: ["3.10"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -244,7 +244,7 @@ jobs:
     if: ${{ needs.changes.outputs.proto == 'true' }}
     strategy:
       matrix:
-        py: [3.9]
+        py: ["3.10"]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -298,7 +298,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        py: [3.9, 3.13]
+        py: ["3.10", "3.13"]
         os: [ubuntu-latest]
     steps:
       - name: Checkout repository
@@ -336,7 +336,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        py: [3.9, 3.13]
+        py: ["3.10", "3.13"]
         os: [ubuntu-latest]
     steps:
       - name: Checkout repository
@@ -375,7 +375,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        py: [3.9, 3.13]
+        py: ["3.10", "3.13"]
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
         exclude:
           - py: 3.13
@@ -423,7 +423,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        py: [3.9, 3.13]
+        py: ["3.10", "3.13"]
         os: [ubuntu-latest]
     steps:
       - name: Checkout repository
@@ -461,7 +461,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        py: [3.9, 3.13]
+        py: ["3.10", "3.13"]
         db: [sqlite, postgresql]
         os: [ubuntu-latest, windows-latest]
         exclude:

DEVELOPMENT.md

@@ -30,10 +30,10 @@ brew install uv
 
 For non-mac users, you can follow the instruction [here](https://docs.astral.sh/uv/getting-started/installation/) to install `uv` for your particular operating system.
 
-Create a new virtual environment. In general, we recommend developing on the lowest Python version compatible with Phoenix (currently 3.9) to make it easier to write code that is compatible across all supported versions.
+Create a new virtual environment. In general, we recommend developing on the lowest Python version compatible with Phoenix (currently 3.10) to make it easier to write code that is compatible across all supported versions.
 
 ```bash
-uv venv --python 3.9
+uv venv --python 3.10
 ```
 
 Activate your virtual environment before continuing.

pyproject.toml

@@ -2,7 +2,7 @@
 name = "arize-phoenix"
 description = "AI Observability and Evaluation"
 readme = "README.md"
-requires-python = ">=3.9, <3.14"
+requires-python = ">=3.10, <3.14"
 license = {text="Elastic-2.0"}
 license-files = { paths = ["LICENSE", "IP_NOTICE"] }
 keywords = [
@@ -15,7 +15,6 @@ authors = [
 ]
 classifiers = [
   "Programming Language :: Python",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",

tests/integration/pyrightconfig.json

@@ -1,6 +1,6 @@
 {
   "typeCheckingMode": "strict",
-  "pythonVersion": "3.9",
+  "pythonVersion": "3.10",
   "useLibraryCodeForTypes": true,
   "reportMissingTypeStubs": false,
   "reportPrivateUsage": false,

tox.ini

@@ -214,9 +214,9 @@ allowlist_externals =
   find
 
 [testenv:build_graphql_schema]
-description = Export GraphQL schema to a file (Python 3.9)
+description = Export GraphQL schema to a file (Python 3.10)
 recreate = true
-basepython = python3.9
+basepython = python3.10
 changedir = app
 deps =
   -r requirements/build-graphql-schema.txt
@@ -228,9 +228,9 @@ commands =
   strawberry export-schema phoenix.server.api.schema:_EXPORTED_GRAPHQL_SCHEMA -o schema.graphql
 
 [testenv:build_openapi_schema]
-description = Export OpenAPI schema to a file (Python 3.9)
+description = Export OpenAPI schema to a file (Python 3.10)
 recreate = true
-basepython = python3.9
+basepython = python3.10
 changedir = schemas
 commands_pre =
   uv pip install --strict --reinstall-package arize-phoenix {toxinidir}
@@ -239,8 +239,8 @@ commands =
   python -m phoenix.server.api.openapi.main -o openapi.json
 
 [testenv:compile_protobuf]
-description = Compile protobuf files (Python 3.9)
-basepython = python3.9
+description = Compile protobuf files (Python 3.10)
+basepython = python3.10
 deps =
   -r requirements/compile-protobuf.txt
 commands =
@@ -349,7 +349,7 @@ commands =
     --output-model-type dataclasses.dataclass \
     --collapse-root-models \
     --enum-field-as-literal all \
-    --target-python-version 3.9 \
+    --target-python-version 3.10 \
     --use-default-kwarg \
     --use-double-quotes \
     --use-generic-container-types \
@@ -378,7 +378,7 @@ commands =
     --collapse-root-models \
     --enable-faux-immutability \
     --enum-field-as-literal all \
-    --target-python-version 3.9 \
+    --target-python-version 3.10 \
     --use-default-kwarg \
     --use-double-quotes \
     --use-generic-container-types \