Merge pull request #2388 from VWS-Python/sphinx-python-minimum

Work out minimum Python version so that fewer replacements are needed…

Author: adamtheturtle

README.rst

@@ -13,7 +13,7 @@ Installation
 
    pip install vws-python
 
-This is tested on Python 3.12+. Get in touch with
+This is tested on Python |minimum-python-version|\+. Get in touch with
 ``adamdangoor@gmail.com`` if you would like to use this with another
 language.
 
@@ -78,3 +78,4 @@ documentation <https://vws-python.readthedocs.io/en/latest>`__.
    :target: https://badge.fury.io/py/VWS-Python
 .. |Documentation Status| image:: https://readthedocs.org/projects/vws-python/badge/?version=latest
    :target: https://vws-python.readthedocs.io/en/latest/?badge=latest
+.. |minimum-python-version| replace:: 3.12

docs/source/conf.py

@@ -6,6 +6,8 @@
 import datetime
 import importlib.metadata
 
+from packaging.specifiers import SpecifierSet
+
 project = "VWS-Python"
 author = "Adam Dangoor"
 
@@ -39,6 +41,14 @@
 _month, _day, _year, *_ = version.split(".")
 release = f"{_month}.{_day}.{_year}"
 
+
+project_metadata = importlib.metadata.metadata(distribution_name=project)
+requires_python = project_metadata["Requires-Python"]
+specifiers = SpecifierSet(specifiers=requires_python)
+(specifier,) = specifiers
+assert specifier.operator == ">="
+minimum_python_version = specifier.version
+
 language = "en"
 
 # The name of the syntax highlighting style to use.
@@ -57,7 +67,7 @@
 htmlhelp_basename = "VWSPYTHONdoc"
 autoclass_content = "init"
 intersphinx_mapping = {
-    "python": ("https://docs.python.org/3.12", None),
+    "python": (f"https://docs.python.org/{minimum_python_version}", None),
 }
 nitpicky = True
 nitpick_ignore = (("py:class", "_io.BytesIO"),)
@@ -75,6 +85,7 @@
 rst_prolog = f"""
 .. |project| replace:: {project}
 .. |release| replace:: {release}
+.. |minimum-python-version| replace:: {minimum_python_version}
 .. |github-owner| replace:: VWS-Python
 .. |github-repository| replace:: vws-python
 """

docs/source/index.rst

@@ -8,7 +8,7 @@ Installation
 
    $ pip install vws-python
 
-This is tested on Python 3.12+.
+This is tested on Python |minimum-python-version|\+.
 Get in touch with ``adamdangoor@gmail.com`` if you would like to use this with another language.
 
 Usage