BREAKING CHANGE: drop support for python 3.7

Python 3.7 will be end-of-life on the 27th of June 2023 and the next release of
RDFLib will be a new major version.

This changes the minimum supported version of Python to 3.8.1 as some of the
dependencies we use are not too fond of python 3.8.0. This change also removes
all accommodations for older python versions.

.github/workflows/validate.yaml

@@ -25,40 +25,37 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         # This is used for injecting additional tests for a specific python
         # version and OS.
         suffix: [""]
         include:
-          - python-version: "3.7"
+          - python-version: "3.8"
             os: ubuntu-latest
             extensive-tests: true
             TOXENV_SUFFIX: "-docs"
-          - python-version: "3.7"
+          - python-version: "3.8"
             os: ubuntu-latest
             extensive-tests: true
             suffix: "-min"
             TOXENV_SUFFIX: "-min"
-          - python-version: "3.8"
+          - python-version: "3.9"
             os: ubuntu-latest
             TOX_EXTRA_COMMAND: "- isort --check-only --diff ."
             TOXENV_SUFFIX: "-docs"
-          - python-version: "3.9"
+          - python-version: "3.10"
             os: ubuntu-latest
             TOX_EXTRA_COMMAND: "- black --check --diff ./rdflib"
             TOXENV_SUFFIX: "-lxml"
-          - python-version: "3.10"
+          - python-version: "3.11"
             os: ubuntu-latest
             TOX_EXTRA_COMMAND: "flake8 --exit-zero rdflib"
             TOXENV_SUFFIX: "-docs"
             PREPARATION: "sudo apt-get install -y firejail"
             extensive-tests: true
             TOX_TEST_HARNESS: "firejail --net=none --"
             TOX_PYTEST_EXTRA_ARGS: "-m 'not webtest'"
-          - python-version: "3.11"
-            os: ubuntu-latest
-            TOXENV_SUFFIX: "-docs"
     steps:
       - uses: actions/checkout@v3
       - name: Cache XDG_CACHE_HOME

README.md

@@ -43,7 +43,7 @@ Help with maintenance of all of the RDFLib family of packages is always welcome
 
 ## Versions & Releases
 
-* `7.0.0a0` current `main` branch
+* `7.0.0a0` current `main` branch and supports Python 3.8.1+ only.
 * `6.x.y` current release and support Python 3.7+ only. Many improvements over 5.0.0
     * see [Releases](https://github.com/RDFLib/rdflib/releases)
 * `5.x.y` supports Python 2.7 and 3.4+ and is [mostly backwards compatible with 4.2.2](https://rdflib.readthedocs.io/en/stable/upgrade4to5.html).

docs/conf.py

@@ -256,7 +256,7 @@ def find_version(filename):
 
 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {
-    "python": ("https://docs.python.org/3.7", None),
+    "python": ("https://docs.python.org/3.8", None),
 }
 
 html_experimental_html5_writer = True
@@ -331,9 +331,6 @@ def find_version(filename):
         ]
     )
 
-if sys.version_info < (3, 8):
-    nitpick_ignore.extend([("py:class", "importlib_metadata.EntryPoint")])
-
 
 def autodoc_skip_member_handler(
     app: sphinx.application.Sphinx,

docs/developers.rst

@@ -437,6 +437,8 @@ flag them as expecting to fail.
 Compatibility
 -------------
 
+RDFlib 7.0.0 release and later only support Python 3.8.1 and newer.
+
 RDFlib 6.0.0 release and later only support Python 3.7 and newer.
 
 RDFLib 5.0.0 maintained compatibility with Python versions 2.7, 3.4, 3.5, 3.6, 3.7.

docs/gettingstarted.rst

@@ -51,7 +51,7 @@ methods that search triples and return them in arbitrary order.
 
 RDFLib graphs also redefine certain built-in Python methods in order
 to behave in a predictable way. They do this by `emulating container types
-<https://docs.python.org/3.7/reference/datamodel.html#emulating-container-types>`_ and
+<https://docs.python.org/3.8/reference/datamodel.html#emulating-container-types>`_ and
 are best thought of as a set of 3-item tuples ("triples", in RDF-speak):
 
 .. code-block:: text

docs/upgrade6to7.rst

@@ -4,6 +4,11 @@
 Upgrading 6 to 7
 ============================================
 
+Python version
+----------------------------------------------------
+
+RDFLib 7 requires Python 3.8.1 or later.
+
 New behaviour for ``publicID`` in ``parse`` methods.
 ----------------------------------------------------
 

examples/secure_with_audit.py

@@ -61,15 +61,8 @@ def main() -> None:
         ),
     )
 
-    if sys.version_info < (3, 8):
-        logging.warn("This example requires Python 3.8 or higher")
-        return None
-
     # Install the audit hook
-    #
-    # note on type error: This is needed because we are running mypy with python
-    # 3.7 mode, so mypy thinks the previous condition will always be true.
-    sys.addaudithook(audit_hook)  # type: ignore[unreachable]
+    sys.addaudithook(audit_hook)
 
     graph = Graph()