Remove support for Python 3.8 (#3887)

# Description Please add an informative description that covers that changes made by the pull request and link all relevant issues. # All Promptflow Contribution checklist: - [ ] **The pull request does not introduce [breaking changes].** - [x] **CHANGELOG is updated for new features, bug fixes or other significant changes.** - [x] **I have read the [contribution guidelines](https://github.com/microsoft/promptflow/blob/main/CONTRIBUTING.md).** - [x] **I confirm that all new dependencies are compatible with the MIT license.** - [ ] **Create an issue and link to the pull request to get dedicated review from promptflow team. Learn more: [suggested workflow](../CONTRIBUTING.md#suggested-workflow).** ## General Guidelines and Best Practices - [x] Title of the pull request is clear and informative. - [x] There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, [see this page](https://github.com/Azure/azure-powershell/blob/master/documentation/development-docs/cleaning-up-commits.md). ### Testing Guidelines - [ ] Pull request includes test coverage for the included changes.
microsoft · Dec 31, 2024 · ebf1192 · ebf1192
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diff --git a/.github/workflows/promptflow-core-test.yml b/.github/workflows/promptflow-core-test.yml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:
@@ -87,7 +87,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-evals-e2e-test-azure.yml b/.github/workflows/promptflow-evals-e2e-test-azure.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-evals-e2e-test-local.yml b/.github/workflows/promptflow-evals-e2e-test-local.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-evals-installation-test.yml b/.github/workflows/promptflow-evals-installation-test.yml
@@ -33,7 +33,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-evals-performance-test.yml b/.github/workflows/promptflow-evals-performance-test.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-evals-unit-test.yml b/.github/workflows/promptflow-evals-unit-test.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-parallel-e2e-test.yml b/.github/workflows/promptflow-parallel-e2e-test.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-parallel-unit-test.yml b/.github/workflows/promptflow-parallel-unit-test.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-release-testing-matrix.yml b/.github/workflows/promptflow-release-testing-matrix.yml
@@ -80,7 +80,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     defaults:
       run:
         shell: bash
@@ -136,7 +136,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     # snok/install-poetry need this to support Windows
     defaults:
       run:
@@ -193,7 +193,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     # snok/install-poetry need this to support Windows
     defaults:
       run:
@@ -243,7 +243,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     # snok/install-poetry need this to support Windows
     defaults:
       run:
@@ -301,7 +301,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     env:
       PROMPT_FLOW_TEST_MODE: "live"
       WORKING_DIRECTORY: ${{ github.workspace }}/src/promptflow-azure
@@ -368,7 +368,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     runs-on: ${{ matrix.os }}
     steps:
     - name: checkout

diff --git a/.github/workflows/promptflow-sdk-cli-test.yml b/.github/workflows/promptflow-sdk-cli-test.yml
@@ -35,7 +35,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     environment:
       internal
     runs-on: ${{ matrix.os }}

diff --git a/.github/workflows/promptflow-tracing-e2e-test.yml b/.github/workflows/promptflow-tracing-e2e-test.yml
@@ -37,7 +37,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/promptflow-tracing-unit-test.yml b/.github/workflows/promptflow-tracing-unit-test.yml
@@ -33,7 +33,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-13]
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11']
       fail-fast: false
     # snok/install-poetry need this to support Windows
     defaults:

diff --git a/.github/workflows/sdk-cli-azure-test-production.yml b/.github/workflows/sdk-cli-azure-test-production.yml
@@ -43,7 +43,7 @@ jobs:
       matrix:
         # replay tests can cover more combinations
         os: [ubuntu-latest]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
     environment:
       internal
     runs-on: ${{ matrix.os }}

diff --git a/.github/workflows/sdk-cli-azure-test-pull-request.yml b/.github/workflows/sdk-cli-azure-test-pull-request.yml
@@ -36,7 +36,7 @@ jobs:
       matrix:
         # replay tests can cover more combinations
         os: [ubuntu-latest]
-        pythonVersion: ['3.8', '3.9', '3.10', '3.11']
+        pythonVersion: ['3.9', '3.10', '3.11']
 
     runs-on: ${{ matrix.os }}
     steps:

diff --git a/docs/dev/dev_setup.md b/docs/dev/dev_setup.md
@@ -5,13 +5,13 @@
 Select either Conda or Poetry to set up your development environment.
 
 1. Conda environment setup
-  - First create a new [conda](https://conda.io/projects/conda/en/latest/user-guide/getting-started.html) environment. Please specify python version as 3.8/3.9/3.10/3.11.
+  - First create a new [conda](https://conda.io/projects/conda/en/latest/user-guide/getting-started.html) environment. Please specify python version as 3.9/3.10/3.11.
     `conda create -n <env_name> python=3.9`.
   - Activate the env you created.
   - In root folder, run `python scripts/dev-setup/main.py` to install the packages and dependencies; if you are using Visual Studio Code, it is recommended to add `--vscode` (which is `python scripts/dev-setup/main.py --vscode`) to enable VS Code to recognize the packages.
 
 2. Poetry environment setup
-  - Install [poetry](https://python-poetry.org/docs/). Please specify python version as 3.8/3.9/3.10/3.11.
+  - Install [poetry](https://python-poetry.org/docs/). Please specify python version as 3.9/3.10/3.11.
   - Each folder under [src](../../src/) (except the promptflow folder) is a separate package, so you need to install the dependencies for each package.
     - `poetry install -C promptflow-core -E <extra> --with dev,test`
     - `poetry install -C promptflow-devkit -E <extra> --with dev,test`

diff --git a/docs/how-to-guides/installation/index.md b/docs/how-to-guides/installation/index.md
@@ -9,7 +9,7 @@ This guide outlines the Promptflow SDK and CLI installation process.
 ## Create a virtual environment (optional)
 When installing prompt flow locally, we recommend using a virtual environment for the installation. This ensures
 that the dependencies for prompt flow are isolated from the rest of your system. Please ensure you have a working 
-python environment (python>=3.8,<4.0), a new virtual environment is preferred.
+python environment (python>=3.9,<4.0), a new virtual environment is preferred.
 
 ::::{tab-set}
 :::{tab-item} venv

diff --git a/pylintrc b/pylintrc
@@ -1,7 +1,7 @@
 [MASTER]
 py-version=3.9
 ignore-patterns=test_*,conftest,setup,.*_utils\.py
-ignore-paths=src\promptflow-evals\tests,src\promptflow-evals\samples,promptflow\evals\evaluate\_telemetry,promptflow\evals\evaluate\_batch_run_client\code_client.py,promptflow\evals\evaluate\_batch_run_client\proxy_client.py
+ignore-paths=src\promptflow-evals\tests,src\promptflow-evals\samples,promptflow\evals\evaluate\_telemetry,promptflow\evals\evaluate\_batch_run_client\code_client.py,promptflow\evals\evaluate\_batch_run_client\proxy_client.py,src/promptflow-devkit/tests/sdk_pfs_test/utils.py
 reports=no
 
 [MESSAGES CONTROL]

diff --git a/scripts/installer/curl_install_pypi/install.py b/scripts/installer/curl_install_pypi/install.py
@@ -218,7 +218,7 @@ def verify_python_version():
     print_status('Verifying Python version.')
     v = sys.version_info
     if v < (3, 8):
-        raise CLIInstallError('The promptflow does not support Python versions less than 3.8.')
+        raise CLIInstallError('The promptflow does not support Python versions less than 3.9.')
     if 'conda' in sys.version:
         raise CLIInstallError("This script does not support the Python Anaconda environment. "
                               "Create an Anaconda virtual environment and install with 'pip'")

diff --git a/src/promptflow-azure/CHANGELOG.md b/src/promptflow-azure/CHANGELOG.md
@@ -1,5 +1,10 @@
 # promptflow-azure package
 
+## v1.17.0 (2025.1.8)
+
+### Improvements
+- Dropped Python 3.8 support for security reasons.
+
 ## v1.16.0 (2024.09.30)
 
 ## v1.15.0 (2024.08.15)

diff --git a/src/promptflow-azure/pyproject.toml b/src/promptflow-azure/pyproject.toml
@@ -22,7 +22,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -38,7 +37,7 @@ packages = [
 "Bug Reports" = "https://github.com/microsoft/promptflow/issues"
 
 [tool.poetry.dependencies]
-python = ">=3.8,<3.9.7 || >3.9.7,<3.13"
+python = ">=3.9,<3.9.7 || >3.9.7,<3.13"
 azure-core = ">=1.26.4,<2.0.0"
 azure-storage-blob = {extras = ["aio"], version = ">=12.17.0,<13.0.0"}  # add [aio] for async run download feature
 azure-identity = ">=1.12.0,<2.0.0"

diff --git a/src/promptflow-core/CHANGELOG.md b/src/promptflow-core/CHANGELOG.md
@@ -1,5 +1,10 @@
 # promptflow-core package
 
+## v1.17.0 (2025.1.8)
+
+### Improvements
+- Dropped Python 3.8 support for security reasons.
+
 ## v1.16.0 (2024.09.30)
 ### Bugs fixed
 - Fix promptflow serving app logged inputs out with default logging level.

diff --git a/src/promptflow-core/pyproject.toml b/src/promptflow-core/pyproject.toml
@@ -24,7 +24,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -40,7 +39,7 @@ packages = [
 "Bug Reports" = "https://github.com/microsoft/promptflow/issues"
 
 [tool.poetry.dependencies]
-python = "<4.0,>=3.8"
+python = "<4.0,>=3.9"
 promptflow-tracing = ">=1.0.0,<2.0.0"
 "ruamel.yaml" = ">=0.17.10,<1.0.0"  # used to generate connection templates with preserved comments
 docstring_parser = "*"  # used to parse doc string for Assistant user tools

diff --git a/src/promptflow-devkit/CHANGELOG.md b/src/promptflow-devkit/CHANGELOG.md
@@ -1,5 +1,10 @@
 # promptflow-devkit package
 
+## v1.17.0 (2025.1.8)
+
+### Improvements
+- Dropped Python 3.8 support for security reasons.
+
 ## v1.16.0 (2024.09.30)
 
 ## v1.15.0 (2024.08.15)

diff --git a/src/promptflow-devkit/pyproject.toml b/src/promptflow-devkit/pyproject.toml
@@ -25,7 +25,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -41,7 +40,7 @@ packages = [
 "Bug Reports" = "https://github.com/microsoft/promptflow/issues"
 
 [tool.poetry.dependencies]
-python = ">=3.8,<3.9.7 || >3.9.7,<3.13"
+python = ">=3.9,<3.9.7 || >3.9.7,<3.13"
 promptflow-core = "<2.0.0"
 httpx = ">=0.25.1"  # used to send http requests asynchronously
 sqlalchemy = ">=1.4.48,<3.0.0"  # sqlite requirements

diff --git a/src/promptflow-devkit/tests/sdk_pfs_test/utils.py b/src/promptflow-devkit/tests/sdk_pfs_test/utils.py
@@ -3,11 +3,11 @@
 # ---------------------------------------------------------
 import contextlib
 import getpass
+import importlib.metadata
 import json
 from typing import Any, Dict, List, Optional
 from unittest import mock
 
-import werkzeug
 from flask.testing import FlaskClient
 
 from promptflow._sdk._service.utils.utils import encrypt_flow_path
@@ -34,7 +34,7 @@ def check_activity_end_telemetry(
             "first_call": True,
             "activity_type": "PublicApi",
             "completion_status": "Success",
-            "user_agent": [f"Werkzeug/{werkzeug.__version__}", f"local_pfs/{VERSION}"],
+            "user_agent": [f"Werkzeug/{importlib.metadata.version('werkzeug')}", f"local_pfs/{VERSION}"],
         }
         for i, expected_activity in enumerate(expected_activities):
             temp = default_expected_call.copy()

diff --git a/src/promptflow-evals/pyproject.toml b/src/promptflow-evals/pyproject.toml
@@ -22,7 +22,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -38,7 +37,7 @@ packages = [
 
 # dependencies
 [tool.poetry.dependencies]
-python = "<4.0,>=3.8"
+python = "<4.0,>=3.9"
 promptflow-devkit = "<2.0.0,>=1.15.0"
 promptflow-core = "<2.0.0,>=1.15.0"
 websocket-client = ">=1.2.0"

diff --git a/src/promptflow-parallel/pyproject.toml b/src/promptflow-parallel/pyproject.toml
@@ -20,7 +20,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -36,7 +35,7 @@ packages = [
 "Bug Reports" = "https://github.com/microsoft/promptflow/issues"
 
 [tool.poetry.dependencies]
-python = "<4.0,>=3.8"
+python = "<4.0,>=3.9"
 promptflow-core = "<2.0.0"
 
 [tool.poetry.group.dev.dependencies]

diff --git a/src/promptflow-rag/pyproject.toml b/src/promptflow-rag/pyproject.toml
@@ -16,7 +16,6 @@ classifiers = [
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -32,7 +31,7 @@ packages = [
 
 # dependencies
 [tool.poetry.dependencies]
-python = "<4.0,>=3.8"
+python = "<4.0,>=3.9"
 azureml-rag = ">= 0.2.30.2"
 azure-search-documents = ">=11.4.0"
 langchain = ">=0.0.236,<=0.1.15"