feat: drop support for Python3.8 (#1848)

* feat: drop support for Python 3.8
* Use `functools.cache` instead of lru_cache
* chore: upgrade deps

Author: waketzheng

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
       TORTOISE_MSSQL_DRIVER: ODBC Driver 18 for SQL Server
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/cache@v4
         with:

.github/workflows/gh-pages-release.yml

@@ -7,8 +7,8 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: "3.9"
       - name: Install and configure Poetry

.github/workflows/gh-pages.yml

@@ -8,8 +8,8 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: "3.9"
       - name: Install and configure Poetry

.github/workflows/pypi.yml

@@ -7,8 +7,8 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.9'
       - name: Install and configure Poetry

CHANGELOG.rst

@@ -15,8 +15,10 @@ Fixed
 ^^^^^
 - Rename pypika to pypika_tortoise for fixing package name conflict (#1829)
 - Concurrent connection pool initialization (#1825)
+
 Changed
 ^^^^^^^
+- Drop support for Python3.8 (#1848)
 - Optimize field conversion to database format to speed up `create` and `bulk_create` (#1840)
 - Improved query performance by optimizing SQL generation (#1837)
 

README.rst

@@ -29,7 +29,7 @@ You can find the docs at `Documentation <https://tortoise.github.io>`_
    Tortoise ORM is a young project and breaking changes are to be expected.
    We keep a `Changelog <https://tortoise.github.io/CHANGELOG.html>`_ and it will have possible breakage clearly documented.
 
-Tortoise ORM is supported on CPython >= 3.8 for SQLite, MySQL and PostgreSQL and Microsoft SQL Server and Oracle.
+Tortoise ORM is supported on CPython >= 3.9 for SQLite, MySQL and PostgreSQL and Microsoft SQL Server and Oracle.
 
 Why was Tortoise ORM built?
 ---------------------------

docs/CONTRIBUTING.rst

@@ -99,7 +99,7 @@ Tortoise ORM follows a the following agreed upon style:
 * Always try to separate out terms clearly rather than concatenate words directly:
     * ``some_purpose`` instead of ``somepurpose``
     * ``SomePurpose`` instead of ``Somepurpose``
-* Keep in mind the targeted Python versions of ``>=3.8``:
+* Keep in mind the targeted Python versions of ``>=3.9``:
     * Do use f-strings
 * Please try and provide type annotations where you can, it will improve auto-completion in editors, and better static analysis.
 

docs/index.rst

@@ -13,7 +13,7 @@ It's engraved in it's design that you are working not with just tables, you work
 
 Source & issue trackers are available at `<https://github.com/tortoise/tortoise-orm/>`_
 
-Tortoise ORM is supported on CPython >= 3.8 for SQLite, MySQL and PostgreSQL.
+Tortoise ORM is supported on CPython >= 3.9 for SQLite, MySQL and PostgreSQL.
 
 Introduction
 ============

examples/fastapi/_tests.py

@@ -2,11 +2,11 @@
 # pylint: disable=E0611,E0401
 import multiprocessing
 import os
+from collections.abc import AsyncGenerator
 from concurrent.futures import ProcessPoolExecutor
 from contextlib import asynccontextmanager
 from datetime import datetime
 from pathlib import Path
-from typing import AsyncGenerator, Tuple
 
 import anyio
 import pytest
@@ -74,7 +74,7 @@ async def create_user(self, async_client: AsyncClient) -> Users:
         assert user_obj.id == user_id
         return user_obj
 
-    async def user_list(self, async_client: AsyncClient) -> Tuple[datetime, Users, User_Pydantic]:
+    async def user_list(self, async_client: AsyncClient) -> tuple[datetime, Users, User_Pydantic]:
         utc_now = datetime.now(pytz.utc)
         user_obj = await Users.create(username="test")
         response = await async_client.get("/users")

examples/fastapi/main.py

@@ -1,7 +1,7 @@
 # pylint: disable=E0611,E0401
 import os
+from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
-from typing import AsyncGenerator
 
 from fastapi import FastAPI
 from routers import router as users_router