Support Python 3.13 (#327)

* Support Python 3.13 * Support Python 3.13 * Use the right 3.13 * Try to enforce Python version * Fix min python version * Sync dependencies * Fix linters * Drop 3.7 * Don't drop 3.7 * Update hypercorn * Fix 3.7 * Readd 3.7 support sentence
Kludex · Sep 20, 2024 · ab163ef · ab163ef
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diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
 
@@ -25,7 +25,7 @@ jobs:
         run: uv python install ${{ matrix.python-version }}
 
       - name: Install dependencies
-        run: uv sync --frozen
+        run: uv sync --python ${{ matrix.python-version }} --frozen
 
       - name: Run tests
         run: scripts/test

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -4,18 +4,21 @@ Hello. Contributions to this project are highly encouraged and appreciated. This
 
 ## Contents
 
-- [Creating a pull request](#creating-a-pull-request)
-  * [Setting up the repository](#setting-up-the-repository)
-- [Developing the project locally](#developing-the-project-locally)
-  * [Setup](#setup)
-  * [Test](#test)
-    + [Coverage requirements](#coverage-requirements)
-  * [Lint](#lint)
-    + [Code style and formatting](#code-style-and-formatting)
-    + [Static type checking](#static-type-checking)
-- [Using the issue tracker](#using-the-issue-tracker)
-  * [Technical support](#technical-support)
-  * [Feature requests](#feature-requests)
+- [Contributing to Mangum](#contributing-to-mangum)
+  - [Contents](#contents)
+  - [Creating a pull request](#creating-a-pull-request)
+    - [Setting up the repository](#setting-up-the-repository)
+  - [Developing the project locally](#developing-the-project-locally)
+    - [Setup](#setup)
+    - [Test](#test)
+      - [Coverage requirements](#coverage-requirements)
+    - [Lint](#lint)
+      - [Code style and formatting](#code-style-and-formatting)
+      - [Static type checking](#static-type-checking)
+  - [Using the issue tracker](#using-the-issue-tracker)
+    - [Technical support](#technical-support)
+    - [Feature requests](#feature-requests)
+  - [Thank you](#thank-you)
 
 ## Creating a pull request
 
@@ -65,7 +68,7 @@ python -m venv venv
 pip install -r requirements.txt
 ```
 
-This environment is used to run the tests for Python versions 3.7, 3.8, 3.9, and 3.10.
+This environment is used to run the tests for Python versions 3.8, 3.9, 3.10, 3.11, 3.12 and 3.13.
 
 ### Test
 

diff --git a/README.md b/README.md
@@ -16,7 +16,7 @@ Mangum is an adapter for running [ASGI](https://asgi.readthedocs.io/en/latest/)
 
 - Event handlers for API Gateway [HTTP](https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api.html) and [REST](https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-rest-api.html) APIs, [Application Load Balancer](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html), [Function URLs](https://docs.aws.amazon.com/lambda/latest/dg/lambda-urls.html), and [CloudFront Lambda@Edge](https://docs.aws.amazon.com/lambda/latest/dg/lambda-edge.html).
 
-- Compatibility with ASGI application frameworks, such as [Starlette](https://www.starlette.io/), [FastAPI](https://fastapi.tiangolo.com/), [Quart](https://pgjones.gitlab.io/quart/) and [Django](https://www.djangoproject.com/). 
+- Compatibility with ASGI application frameworks, such as [Starlette](https://www.starlette.io/), [FastAPI](https://fastapi.tiangolo.com/), [Quart](https://pgjones.gitlab.io/quart/) and [Django](https://www.djangoproject.com/).
 
 - Support for binary media types and payload compression in API Gateway using GZip or Brotli.
 

diff --git a/docs/index.md b/docs/index.md
@@ -16,7 +16,7 @@ Mangum is an adapter for running [ASGI](https://asgi.readthedocs.io/en/latest/)
 
 - Event handlers for API Gateway [HTTP](https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api.html) and [REST](https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-rest-api.html) APIs, [Application Load Balancer](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html), [Function URLs](https://docs.aws.amazon.com/lambda/latest/dg/lambda-urls.html), and [CloudFront Lambda@Edge](https://docs.aws.amazon.com/lambda/latest/dg/lambda-edge.html).
 
-- Compatibility with ASGI application frameworks, such as [Starlette](https://www.starlette.io/), [FastAPI](https://fastapi.tiangolo.com/), [Quart](https://pgjones.gitlab.io/quart/) and [Django](https://www.djangoproject.com/). 
+- Compatibility with ASGI application frameworks, such as [Starlette](https://www.starlette.io/), [FastAPI](https://fastapi.tiangolo.com/), [Quart](https://pgjones.gitlab.io/quart/) and [Django](https://www.djangoproject.com/).
 
 - Support for binary media types and payload compression in API Gateway using GZip or Brotli.
 

diff --git a/mangum/handlers/alb.py b/mangum/handlers/alb.py
@@ -100,7 +100,6 @@ def body(self) -> bytes:
 
     @property
     def scope(self) -> Scope:
-
         headers = transform_headers(self.event)
         list_headers = [list(x) for x in headers]
         # Unique headers. If there are duplicates, it will use the last defined.

diff --git a/mangum/protocols/http.py b/mangum/protocols/http.py
@@ -87,7 +87,6 @@ async def send(self, message: Message) -> None:
             self.headers = message.get("headers", [])
             self.state = HTTPCycleState.RESPONSE
         elif self.state is HTTPCycleState.RESPONSE and message["type"] == "http.response.body":
-
             body = message.get("body", b"")
             more_body = message.get("more_body", False)
             self.buffer.write(body)

diff --git a/mangum/protocols/lifespan.py b/mangum/protocols/lifespan.py
@@ -98,14 +98,12 @@ async def run(self) -> None:
     async def receive(self) -> Message:
         """Awaited by the application to receive ASGI `lifespan` events."""
         if self.state is LifespanCycleState.CONNECTING:
-
             # Connection established. The next event returned by the queue will be
             # `lifespan.startup` to inform the application that the connection is
             # ready to receive lfiespan messages.
             self.state = LifespanCycleState.STARTUP
 
         elif self.state is LifespanCycleState.STARTUP:
-
             # Connection shutting down. The next event returned by the queue will be
             # `lifespan.shutdown` to inform the application that the connection is now
             # closing so that it may perform cleanup.

diff --git a/mangum/types.py b/mangum/types.py
@@ -101,7 +101,8 @@ def get_remaining_time_in_millis(self) -> int:
 
 
 class ASGI(Protocol):
-    async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None: ...  # pragma: no cover
+    async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
+        ...  # pragma: no cover
 
 
 LifespanMode: TypeAlias = Literal["auto", "on", "off"]
@@ -120,15 +121,20 @@ class LambdaConfig(TypedDict):
 
 
 class LambdaHandler(Protocol):
-    def __init__(self, *args: Any) -> None: ...  # pragma: no cover
+    def __init__(self, *args: Any) -> None:
+        ...  # pragma: no cover
 
     @classmethod
-    def infer(cls, event: LambdaEvent, context: LambdaContext, config: LambdaConfig) -> bool: ...  # pragma: no cover
+    def infer(cls, event: LambdaEvent, context: LambdaContext, config: LambdaConfig) -> bool:
+        ...  # pragma: no cover
 
     @property
-    def body(self) -> bytes: ...  # pragma: no cover
+    def body(self) -> bytes:
+        ...  # pragma: no cover
 
     @property
-    def scope(self) -> Scope: ...  # pragma: no cover
+    def scope(self) -> Scope:
+        ...  # pragma: no cover
 
-    def __call__(self, response: Response) -> dict: ...  # pragma: no cover
+    def __call__(self, response: Response) -> dict:
+        ...  # pragma: no cover
diff --git a/pyproject.toml b/pyproject.toml
@@ -11,7 +11,7 @@ authors = [
 ]
 description = "AWS Lambda support for ASGI applications"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.7"
 classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
@@ -20,6 +20,9 @@ classifiers = [
     "Programming Language :: Python :: 3.8",
     "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",
     "Topic :: Internet :: WWW/HTTP",
 ]
 dependencies = ["typing_extensions"]
@@ -33,6 +36,8 @@ dev-dependencies = [
     "flake8",
     "starlette",
     "quart",
+    "hypercorn<0.15.0; python_version < '3.8'",
+    "hypercorn>=0.15.0; python_version >= '3.8'",
     "mypy",
     "brotli",
     "brotli-asgi",

diff --git a/setup.cfg b/setup.cfg
@@ -1,6 +1,6 @@
 [flake8]
 max-line-length = 120
-ignore = E203, W503, E704
+ignore = E203, W503, E704, E231
 per-file-ignores =
     tests/conftest.py:E501
     tests/test_http.py:E501

diff --git a/tests/test_adapter.py b/tests/test_adapter.py
@@ -6,7 +6,8 @@
 from mangum.types import Receive, Scope, Send
 
 
-async def app(scope: Scope, receive: Receive, send: Send): ...
+async def app(scope: Scope, receive: Receive, send: Send):
+    ...
 
 
 def test_default_settings():