Added explicit python3.9 and 3.10 support (#224)

* Added python3.9 and 3.10 support;
- Added python3.9 and 3.10 tests to CI;
- Added python3.9 and 3.10 classifiers to `setup.py`;
- Changed `quart` python version constraint;
- Adjusted tests to reflect the former;

* Fixed `Quart` import conditions in `test_lifespan.py`;

Co-authored-by: Ramazan Elsunkaev <[email protected]>

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}

requirements.txt

@@ -5,7 +5,7 @@ pytest-cov
 black
 flake8
 starlette
-quart; python_version == '3.7'
+quart; python_version >= '3.7'
 moto[server]
 mypy
 brotli

setup.py

@@ -26,5 +26,7 @@ def get_long_description():
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
 )

tests/test_lifespan.py

@@ -8,11 +8,10 @@
 from mangum import Mangum
 from mangum.exceptions import LifespanFailure
 
-# One (or more) of Quart's dependencies does not support Python 3.8, ignore this case.
-IS_PY38 = sys.version_info[:2] == (3, 8)
+# Quart no longer support python3.6.
 IS_PY36 = sys.version_info[:2] == (3, 6)
 
-if not (IS_PY38 or IS_PY36):
+if not IS_PY36:
     from quart import Quart
 else:
     Quart = None
@@ -269,9 +268,6 @@ def homepage(request):
     }
 
 
-@pytest.mark.skipif(
-    IS_PY38, reason="One (or more) of Quart's dependencies does not support Python 3.8."
-)
 @pytest.mark.skipif(IS_PY36, reason="Quart does not support Python 3.6.")
 @pytest.mark.parametrize(
     "mock_aws_api_gateway_event", [["GET", None, None]], indirect=True