Added Python >= 3.7 Support

.github/workflows/test-python-package.yml

@@ -19,21 +19,58 @@ permissions:
 
 jobs:
   build:
-
+    name: Build distribution
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.10
-      uses: actions/setup-python@v3
       with:
-        python-version: "3.10"
+        persist-credentials: false
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.x"
+    - name: Install pypa/build
+      run: >-
+        python3 -m
+        pip install
+        build
+        --user
+    - name: Build a binary wheel and a source tarball
+      run: python3 -m build
+    - name: Store the distribution packages
+      uses: actions/upload-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+
+  test:
+    name: >-
+      Testing distribution
+    needs:
+    - build
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Download all the dists
+      uses: actions/download-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install flake8 pytest
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        python -m pip install -e ./
+        for w in ./dist/*.whl; do python -m pip install $w; done
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names

ChangeLog.md

@@ -1,6 +1,12 @@
 # [saveable-objects](README.md) Change Log
 
-## Release 1.0.0
+## Release v1.1.0
+
+This release adds support for earlier python versions that 3.10. Specifically the changes in this release are:
+- Support was added for python versions 3.7, 3.8, and 3.9
+- Minor updates to the documentation.
+
+## Release v1.0.0
 
 This is the initial release. Future changes to this release will be documented
 above.

README.md

@@ -8,6 +8,15 @@ The python package can be installed with pip as follows:
 pip install saveable-objects
 ```
 
+### Requirements:
+
+Python >= 3.7
+
+Packages:
+
+- [NumPy](https://numpy.org/)
+- [cloudpickle](https://github.com/cloudpipe/cloudpickle)
+
 ## Documentation
 
 Documentation including worked examples can be found at: [https://saveable-objects.readthedocs.io/](https://saveable-objects.readthedocs.io/).
@@ -19,5 +28,5 @@ Source code can be found at: [https://github.com/Christopher-K-Long/saveable-obj
 
 ## Version and Changes
 
-The current version is [`1.0.0`](ChangeLog.md#release-100). Please see the [Change Log](ChangeLog.md) for more
+The current version is [`1.1.0`](ChangeLog.md#release-110). Please see the [Change Log](ChangeLog.md) for more
 details.

docs/index.rst

@@ -3,8 +3,8 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-saveable-objects documentation
-==============================
+saveable-objects
+================
 
 .. include:: ../README.md
     :parser: myst_parser.sphinx_

docs/reference/index.rst

@@ -1,5 +1,5 @@
 API Reference
-=============================
+=============
 
 .. autosummary::
     :toctree: _autosummary

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "saveable-objects"
-version = "1.0.0"
+version = "1.1.0"
 authors = [
   { name="Christopher_K._Long", email="ckl45@cam.ac.uk" },
 ]
@@ -14,7 +14,7 @@ maintainers = [
 description = "A python package for checkpointing, saving, and loading objects."
 keywords = ["save", "saving", "saveable", "object", "checkpoint", "checkpointing", "load", "loading"]
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.7"
 classifiers = [
     "Programming Language :: Python :: 3",
     "Operating System :: OS Independent",

src/saveable_objects/__init__.py

@@ -2,4 +2,9 @@
 A python package for checkpointing, saving, and loading objects.
 """
 
-from ._saveable_object import SaveableObject
+import sys
+
+if sys.version_info[1] >= 10: # check if python is version 3.8 or later
+    from ._saveable_object import SaveableObject
+else: # import from the python version 3.7 compatable file
+    from ._saveable_object_3_7 import SaveableObject

src/saveable_objects/_saveable_object.py

@@ -89,7 +89,8 @@ def _save(self, path: str, write_mode: Literal["w", "wb", "a", "ab", "x", "xb"]
             as `mode` for ``open``. By default ``"wb"``.
         """
         if not os.path.exists(path):
-            if (dirname := os.path.dirname(path)) != '':
+            dirname = os.path.dirname(path)
+            if dirname != '':
                 os.makedirs(dirname, exist_ok=True)
         with open(path, write_mode) as file:
             cpkl.dump(self, file, pkl.HIGHEST_PROTOCOL)
@@ -343,7 +344,8 @@ def loadif(cls, *args, **kwargs) -> Tuple["SaveableObject", bool]:
             path = bound_args.arguments["path"]
         except KeyError:
             path = None
-        if instance := cls.tryload(path):
+        instance = cls.tryload(path)
+        if instance:
             return instance, True
         return cls(*args, **kwargs), False
     @classmethod