Generate _version.py file when installing

.gitignore

@@ -158,3 +158,4 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 .idea
+_version.py

pyproject.toml

@@ -21,15 +21,16 @@ testpaths = [
 ]
 [tool.coverage.run]
 source = ["src"]
-omit = ["*/version.py"]
+omit = ["*/_version.py"]
 
 [project.optional-dependencies]
 testing = [
     "pytest",
     "pytest-cov",
     "flake8",
     "mypy",
+    "setuptools_scm"
 ]
 
-#[tool.setuptools_scm]
-#version_file = "src/spellbind/version.py"
+[tool.setuptools_scm]
+version_file = "src/spellbind/_version.py"

src/spellbind/__init__.py

@@ -0,0 +1,5 @@
+try:
+    from .version import __version__
+except ImportError:
+    from importlib.metadata import version
+    __version__ = version("spellbind")

tests/test_version.py

@@ -0,0 +1,15 @@
+import re
+
+import spellbind
+
+
+def test_version_exists():
+    assert hasattr(spellbind, '__version__')
+    assert spellbind.__version__ is not None
+
+
+def test_version_format():
+    version = spellbind.__version__
+    # Should be semver-like: 0.1.0, 0.1.0.dev1+g123abc, etc.
+    pattern = r'^\d+\.\d+\.\d+(?:\.dev\d+\+g[a-f0-9]+)?$'
+    assert re.match(pattern, version), f"Version '{version}' doesn't match expected format"