refactor(project): move `__version__` and `_get_version` to `_version.py` to avoid circular imports

activate_account_project/_version.py

+import functools
+import tomllib
+from pathlib import Path
+
+
+@functools.cache
+def get_version():
+    """
+    Retrieves the project's version number from pyproject.toml.
+    This function is intended to ensure that the version is obtained from a
+    single source of truth (pyproject.toml), avoiding duplication.
+
+    Returns:
+        str: The version number as defined in pyproject.toml (e.g. "0.1.0").
+
+    Raises:
+        FileNotFoundError: If pyproject.toml cannot be found at the expected location.
+    """
+    # Navigate to the pyproject.toml file located in the project root
+    pyproject_path = Path(__file__).resolve().parents[1] / "pyproject.toml"
+
+    # Open and parse the pyproject.toml file using tomllib
+    with pyproject_path.open("rb") as f:
+        pyproject_data = tomllib.load(f)
+
+    # Return the version number from the [tool.poetry] section
+    return pyproject_data["tool"]["poetry"]["version"]
+
+
+# Define the __version__ attribute for the project
+__version__ = get_version()

activate_account_project/settings/base.py

-import functools
 import os
 import sys
-import tomllib
 from datetime import timedelta
-from pathlib import Path
 
 import externalsettings
 import structlog
 
 from api.versions import AVAILABLE_VERSIONS
 
-
-@functools.cache
-def get_version():
-    """
-    Retrieves the project's version number from pyproject.toml.
-    This function is intended to ensure that the version is obtained from a
-    single source of truth (pyproject.toml), avoiding duplication.
-
-    Returns:
-        str: The version number as defined in pyproject.toml (e.g. "0.1.0").
-
-    Raises:
-        FileNotFoundError: If pyproject.toml cannot be found at the expected location.
-    """
-    # Navigate to the pyproject.toml file located in the project root
-    pyproject_path = Path(__file__).resolve().parents[2] / "pyproject.toml"
-
-    # Open and parse the pyproject.toml file using tomllib
-    with pyproject_path.open("rb") as f:
-        pyproject_data = tomllib.load(f)
-
-    # Return the version number from the [tool.poetry] section
-    return pyproject_data["tool"]["poetry"]["version"]
-
-
-# Define the __version__ attribute for the project
-__version__ = get_version()
+from .._version import __version__
 
 # By default, make use of connection pooling for the default database and use the Postgres engine.
 DATABASES = {