Update Python version boundaries to include 3.12 (#449)

.github/workflows/pythonpackage.yml

@@ -19,14 +19,15 @@ jobs:
       max-parallel: 5
       matrix:
         # https://github.com/actions/python-versions/blob/main/versions-manifest.json
-        python-version: [3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
     - name: Install Poetry and dependencies
       run: |
         set -e

dataclasses_json/core.py

@@ -185,7 +185,7 @@ def _decode_dataclass(cls, kvs, infer_missing):
                     )
                 else:
                     warnings.warn(
-                        f"`NoneType` object {warning}.", RuntimeWarning
+                        f"'NoneType' object {warning}.", RuntimeWarning
                     )
             init_kwargs[field.name] = field_value
             continue

pyproject.toml

@@ -9,7 +9,7 @@ readme = "README.md"
 repository = 'https://github.com/lidatong/dataclasses-json'
 
 [tool.poetry.dependencies]
-python = ">=3.7, <3.12"
+python = ">=3.7, <3.13"
 typing-inspect = ">=0.4.0, <1"
 marshmallow = ">=3.18.0,<4.0.0"
 

tests/test_api.py

@@ -127,7 +127,7 @@ def test_warns_when_nonoptional_field_is_missing_with_infer_missing(self):
             assert (actual == expected)
 
     def test_warns_when_required_field_is_none(self):
-        with pytest.warns(RuntimeWarning, match='`NoneType` object'):
+        with pytest.warns(RuntimeWarning, match='\'NoneType\' object'):
             assert (DataClassWithDataClass.from_json(
                 '{"dc_with_list": null}') == DataClassWithDataClass(None))